Genesis 6:22

, Gen 6:10 . And a farther description of the corruption of man, Gen 6:11 , Gen 6:12 . Noah is forewarned of the approaching destruction of the human race, Gen 6:13 ; and is ordered to build an ark for the safety of himself and household, the form and dimensions of which are particularly described, Gen 6:14-16 . The deluge threatened, Gen 6:17 . The covenant of God's mercy is to be established between him and the family of Noah, Gen 6:18 . A male and female of all kinds of animals that could not live in the waters to be brought into the ark, Gen 6:19 , Gen 6:20 . Noah is commanded to provide food for their sustenance, Gen 6:21 ; and punctually follows all these directions, Gen 6:22 . Verse 1 When men began to multiply - It was not at this time that men began to multiply, but the inspired penman speaks now of a fact which had taken place long before. As there is a distinction made here between men and those called the sons of God, it is generally supposed that the immediate posterity of Cain and that of Seth are intended. The first were mere men, such as fallen nature may produce, degenerate sons of a degenerate father, governed by the desire of the flesh, the desire of the eye, and the pride of life. The others were sons of God, not angels, as some have dreamed, but such as were, according to our Lord's doctrine, born again, born from above, Joh 3:3 , Joh 3:5 , Joh 3:6 , etc., and made children of God by the influence of the Holy Spirit, Gal 5:6 . The former were apostates from the true religion, the latter were those among whom it was preserved and cultivated. Dr. Wall supposes the first verses of this chapter should be paraphrased thus: "When men began to multiply on the earth, the chief men took wives of all the handsome poor women they chose. There were tyrants in the earth in those days; and also after the antediluvian days powerful men had unlawful connections with the inferior women, and the children which sprang from this illicit commerce were the renowned heroes of antiquity, of whom the heathens made their gods." Verse 3 My spirit shall not always strive - It is only by the influence of the Spirit of God that the carnal mind can be subdued and destroyed; but those who wilfully resist and grieve that Spirit must be ultimately left to the hardness and blindness of their own hearts, if they do not repent and turn to God. God delights in mercy, and therefore a gracious warning is given. Even at this time the earth was ripe for destruction; but God promised them one hundred and twenty years' respite: if they repented in that interim, well; if not, they should be destroyed by a flood. See the note on Gen 6:5 Verse 4 There were giants in the earth - נפלים nephilim, from נפל naphal, "he fell." Those who had apostatized or fallen from the true religion. The Septuagint translate the original word by γιγαντες, which literally signifies earth-born, and which we, following them, term giants, without having any reference to the meaning of the word, which we generally conceive to signify persons of enormous stature. But the word when properly understood makes a very just distinction between the sons of men and the sons of God; those were the nephilim, the fallen earth-born men, with the animal and devilish mind. These were the sons of God, who were born from above; children of the kingdom, because children of God. Hence we may suppose originated the different appellatives given to sinners and saints; the former were termed γιγαντες, earth-born, and the latter, ἁγιοι, i.e. saints, persons not of the earth, or separated from the earth. The same became mighty men - men of renown - גברים gibborim, which we render mighty men, signifies properly conquerors, heroes, from גבר gabar, "he prevailed, was victorious." and אנשי השם anshey hashshem, "men of the name," ανθρωποι ονομαστοι, Septuagint; the same as we render men of renown, renominati, twice named, as the word implies, having one name which they derived from their fathers, and another which they acquired by their daring exploits and enterprises. It may be necessary to remark here that our translators have rendered seven different Hebrew words by the one term giants, viz., nephilim, gibborim, enachim, rephaim, emim, and zamzummim; by which appellatives are probably meant in general persons of great knowledge, piety, courage, wickedness, etc., and not men of enormous stature, as is generally conjectured. Verse 5 The wickedness of man was great - What an awful character does God give of the inhabitants of the antediluvian world! 1. They were flesh, ( Gen 6:3 ), wholly sensual, the desires of the mind overwhelmed and lost in the desires of the flesh, their souls no longer discerning their high destiny, but ever minding earthly things, so that they were sensualized, brutalized, and become flesh; incarnated so as not to retain God in their knowledge, and they lived, seeking their portion in this life. 2. They were in a state of wickedness. All was corrupt within, and all unrighteous without; neither the science nor practice of religion existed. Piety was gone, and every form of sound words had disappeared. 3. This wickedness was great רבה rabbah, "was multiplied;" it was continually increasing and multiplying increase by increase, so that the whole earth was corrupt before God, and was filled with violence, ( Gen 6:11 ); profligacy among the lower, and cruelty and oppression among the higher classes, being only predominant. 4. All the imaginations of their thoughts were evil - the very first embryo of every idea, the figment of every thought, the very materials out of which perception, conception, and ideas were formed, were all evil; the fountain which produced them, with every thought, purpose, wish, desire, and motive, was incurably poisoned. 5. All these were evil without any mixture of good - the Spirit of God which strove with them was continually resisted, so that evil had its sovereign sway. 6. They were evil continually - there was no interval of good, no moment allowed for serious reflection, no holy purpose, no righteous act. What a finished picture of a fallen soul! Such a picture as God alone, who searches the heart and tries the spirit, could possibly give. 7. To complete the whole, God represents himself as repenting because he had made them, and as grieved at the heart because of their iniquities! Had not these been voluntary transgressions, crimes which they might have avoided, had they not grieved and quenched the Spirit of God, could he speak of them in the manner he does here? 8. So incensed is the most holy and the most merciful God, that he is determined to destroy the work of his hands: And the Lord said, I will destroy man whom I have created; Gen 6:7 . How great must the evil have been, and how provoking the transgressions, which obliged the most compassionate God, for the vindication of his own glory, to form this awful purpose! Fools make a mock at sin, but none except fools. Verse 8 Noah found grace in the eyes of the Lord - Why? Because he was, 1. A just man, איש צדיק ish tsaddik, a man who gave to all their due; for this is the ideal meaning of the original word. 2. He was perfect in his generation - he was in all things a consistent character, never departing from the truth in principle or practice. 3. He walked with God - he was not only righteous in his conduct, but he was pious, and had continual communion with God. The same word is used here as before in the case of Enoch. See Gen 5:22 . Verse 11 The earth also was corrupt - See the note on Gen 6:5 . Verse 13 I will destroy them with the earth - Not only the human race was to he destroyed, but all terrestrial animals, i.e. those which could not live in the waters. These must necessarily be destroyed when the whole surface of the earth was drowned. But destroying the earth may probably mean the alteration of its constitution. Dr. Woodward, in his natural history of the earth, has rendered it exceedingly probable that the whole terrestrial substance was amalgamated with the waters, after which the different materials of its composition settled in beds or strata according to their respective gravities. This theory, however, is disputed by others. Verse 14 Make thee an ark - תבת tebath, a word which is used only to express this vessel, and that in which Moses was preserved, Exo 2:3 , Exo 2:5 . It signifies no more than our word vessel in its common acceptation - a hollow place capable of containing persons, goods, etc., without any particular reference to shape or form. Gopher wood - Some think the cedar is meant; others, the cypress. Bochart renders this probable, 1. From the appellation, supposing the Greek word κυπαρισσος, cypress, was formed from the Hebrew גפר, gopher; for take away the termination ισσος, and then gopher and κυπαρ will have a near resemblance. 2. Because the cypress is not liable to rot, nor to be injured by worms. 3. The cypress was anciently used for ship-building. 4. This wood abounded in Assyria, where it is probable Noah built the ark. After all, the word is of doubtful signification, and occurs nowhere else in the Scriptures. The Septuagint render the place, εκ ξυλων τετραγωνων, "of square timber;" and the Vulgate, de lignis laevigatis, "of planed timber;" so it is evident that these translators knew not what kind of wood was intended by the original. The Syriac and Arabic trifle with the passage, rendering it wicker work, as if the ark had been a great basket! Both the Targums render it cedar; and the Persian, pine or fir. Verse 15 Thou shalt make - the length of the ark - three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits - Allowing the cubit, which is the length from the elbow to the tip of the middle finger, to be eighteen inches, the ark must have been four hundred and fifty feet in length, seventy-five in breadth, and forty-five in height. But that the ancient cubit was more than eighteen inches has been demonstrated by Mr. Greaves, who traveled in Greece, Palestine, and Egypt, in order to be able to ascertain the weights, moneys, and measures of antiquity. He measured the pyramids in Egypt, and comparing the accounts which Herodotus, Strabo, and others, give of their size, he found the length of a cubit to be twenty-one inches and eight hundred and eighty-eight decimal parts out of a thousand, or nearly twenty-two inches. Hence the cube of a cubit is evidently ten thousand four hundred and eighty-six inches. And from this it will appear that the three hundred cubits of the ark's length make five hundred and forty-seven feet; the fifty for its breadth, ninety-one feet two inches; and the thirty for its height, fifty-four feet eight inches. When these dimensions are examined, the ark will be found to be a vessel whose capacity was more than sufficient to contain all persons and animals said to have been in it, with sufficient food for each for more than twelve months. This vessel Dr. Arbuthnot computes to have been eighty-one thousand and sixty-two tons in burden. As many have supposed the capacity of the ark to have been much too small for the things which were contained in it, it will be necessary to examine this subject thoroughly, that every difficulty may be removed. The things contained in the ark, besides the eight persons of Noah's family, were one pair of all unclean animals, and seven pairs of all clean animals with provisions for all sufficient for twelve months. At the first view the number of animals may appear so immense that no space but the forest could be thought sufficient to contain them. If, however, we come to a calculation, the number of the different genera or kinds of animals will be found much less than is generally imagined. It is a question whether in this account any but the different genera of animals necessary to be brought into the ark should be included Naturalists have divided the whole system of zoology into Classes and Orders, containing genera and species. There are six classes thus denominated: 1. Mammalia; 2. Aves; 3. Amphibia; 4. Pisces; 5. Insectae; 6. Vermes. With the three last of these, viz., fishes, insects, and worms, the question can have little to do. The first Class, Mammalia, or animals with teats, contains seven orders, and only forty-three genera if we except the seventh order, cete, i.e. all the whale kind, which certainly need not come into this account. The different species in this class amount, the cete excluded, to five hundred and forty-three. The second Class, Aves, birds, contains six orders, and only seventy-four genera, if we exclude the third order, anseres, or web-footed fowls, all of which could very well live in the water. The different species in this class, the anseres excepted, amount to two thousand three hundred and seventy-two. The third Class, Amphibia, contains only two orders, reptiles and serpents; these comprehend ten genera, and three hundred and sixty-six species, but of the reptiles many could live in the water, such as the tortoise, frog, etc. Of the former there are thirty-three species, of the latter seventeen, which excluded reduce the number to three hundred and sixteen. The whole of these would occupy but little room in the ark, for a small portion of earth, etc., in the hold would be sufficient for their accommodation. Bishop Wilkins, who has written largely and with his usual accuracy on this subject, supposes that quadrupeds do not amount to one hundred different kinds, nor birds which could not live in the water to two hundred. Of quadrupeds he shows that only seventy-two species needed a place in the ark, and the birds he divides into nine classes, including in the whole one hundred and ninety-five kinds, from which all the web-footed should be deducted, as these could live in the water. He computes all the carnivorous animals equivalent, as to the bulk of their bodies and food, to twenty-seven wolves; and all the rest to one hundred and eighty oxen. For the former he allows one thousand eight hundred and twenty-five sheep for their annual consumption; and for the latter, one hundred and nine thousand five hundred cubits of hay: these animals and their food will be easily contained In the two first stories, and much room to spare; as to the third story, no person can doubt its being sufficient for the fowls, with Noah and his family. One sheep each day he judges will be sufficient for six wolves; and a square cubit of hay, which contains forty-one pounds, as ordinarily pressed in our ricks, will he amply sufficient for one ox in the day. When the quantum of room which these animals and their provender required for one year, is compared with the capacity of the ark, we shall be led to conclude, with the learned bishop, "that of the two it is more difficult to assign a number and bulk of necessary things to answer to the capacity of the ark, than to find sufficient room for the several species of animals and their food already known to have been there." This he attributes to the imperfection of our lists of animals, especially those of the unknown parts of the earth; and adds, "that the most expert mathematicians at this day," and he was one of the first in Europe, "could not assign the proportion of a vessel better accommodated to the purpose than is here done;" and concludes thus: "The capacity of the ark, which has been made an objection against Scripture, ought to be esteemed a confirmation of its Divine authority; since, in those ruder ages men, being less versed in arts and philosophy, were more obnoxious to vulgar prejudices than now, so that had it been a human invention it would have been contrived, according to those wild apprehensions which arise from a confused and general view of things, as much too big as it has been represented too little." See Bishop Wilkins's Essay towards a Philosophical Character and Language. Verse 16 A window shalt thou make - What this was cannot be absolutely ascertained. The original word צהר tsohar signifies clear or bright; the Septuagint translate it by επωυναγων, "collecting, thou shalt make the ark," which plainly shows they did not understand the word as signifying any kind of window or light. Symmacbus translates it διαφανες, a transparency; and Aquila, μεσημβρινον, the noon. Jonathan ben Uzziel supposes that it was a precious luminous stone which Noah, by Divine command, brought from the river Pison. It is probably a word which should be taken in a collective sense, signifying apertures for air and light. In a cubit shalt thou finish it above - Probably meaning that the roof should be left a cubit broad at the apex or top, and that it should not terminate in a sharp ridge. But this place is variously understood. Verse 17 I-do bring a flood - מבול; mabbul; a word used only to designate the general deluge, being never applied to signify any other kind of inundation; and does not the Holy Spirit intend to show by this that no other flood was ever like this, and that it should continue to be the sole one of the kind? There have been many partial inundations in various countries, but never more than One general deluge; and we have God's promise, Gen 9:15 , that there shall never be another. Verse 18 With thee will I establish my covenant - The word ברית berith, from בר bar, to purify or cleanse, signifies properly a purification or purifier, (see on Genesis 15 (note)), because in all covenants made between God and man, sin and sinfulness were ever supposed to be on man's side, and that God could not enter into any covenant or engagement with him without a purifier; hence, in all covenants, a sacrifice was offered for the removal of offenses, and the reconciliation of God to the sinner; and hence the word ברית berith signifies not only a covenant, but also the sacrifice offered on the occasion, Exo 24:8 ; Psa 50:5 ; and Jesus Christ, the great atonement and purifier, has the same word for his title, Isa 42:6 ; Isa 49:8 ; and Zac 9:11 . Almost all nations, in forming alliances, etc., made their covenants or contracts in the same way. A sacrifice was provided, its throat was cut, and its blood poured out before God; then the whole carcass was divided through the spinal marrow from the head to the rump; so as to make exactly two equal parts; these were placed opposite to each other, and the contracting parties passed between them, or entering at opposite ends met in the center, and there took the covenant oath. This is particularly referred to by Jeremiah, Jer 34:18 , Jer 34:19 , Jer 34:20 : "I will give the men (into the hands of their enemies, Jer 34:20 ) that have transgressed my covenant, which have not performed the words of the covenant which they made before me, when they cut the calf in twain, and passed between the parts thereof," etc. See also Deu 29:12 . A covenant, says Mr. Ainsworth, is a disposition of good things faithfully declared, which God here calls his, as arising from his grace towards Noah ( Gen 6:8 ) and all men; but implying also conditions on man's part, and therefore is called our covenant, Zac 9:11 . The apostles call it διαθηκη, a testament or disposition; and it is mixed of the properties both of covenant and testament, as the apostle shows, Heb 9:16 , etc., and of both may be named a testamental covenant, whereby the disposing of God's favors and good things to us is declared. The covenant made with Noah signified, on God's part, that he should save Noah and his family from death by the ark. On Noah's part, that he should in faith and obedience make and enter into the ark - Thou shalt come into the ark, etc., so committing himself to God's preservation, Heb 11:7 . And under this the covenant or testament of eternal salvation by Christ was also implied, the apostle testifying, 1Pet 3:21 , that the antitype, baptism, doth also now save us; for baptism is a seal of our salvation, Mar 16:16 . To provide a Savior, and the means of salvation, is God's part: to accept this Savior, laying hold on the hope set before us, is ours. Those who refuse the way and means of salvation must perish; those who accept of the great Covenant Sacrifice cannot perish, but shall have eternal life. See on Gen 15:10 (note), etc. Verse 19 To keep them alive - God might have destroyed all the animal creation, and created others to occupy the new world, but he chose rather to preserve those already created. The Creator and Preserver of the universe does nothing but what is essentially necessary to be done. Nothing should be wantonly wasted; nor should power or skill be lavished where no necessity exists; and yet it required more means and economy to preserve the old than to have created new ones. Such respect has God to the work of his hands, that nothing but what is essential to the credit of his justice and holiness shall ever induce him to destroy any thing he has made. Verse 21 Of all food that is eaten - That is, of the food proper for every species of animals. Verse 22 Thus did Noah - He prepared the ark; and during one hundred and twenty years preached righteousness to that sinful generation, 2Pet 2:5 . And this we are informed, 1Pet 3:18 , 1Pet 3:19 , etc., he did by the Spirit of Christ; for it was only through him that the doctrine of repentance could ever be successfully preached. The people in Noah's time are represented as shut up in prison - arrested and condemned by God's justice, but graciously allowed the space of one hundred and twenty years to repent in. This respite was an act of great mercy; and no doubt thousands who died in the interim availed themselves of it, and believed to the saving of their souls. But the great majority of the people did not, else the flood had never come. Introduction God informs Noah that within seven days he shall send a rain upon the earth, that shall continue for forty days and nights; and therefore commands him to take his family, with the different clean and unclean animals, and enter the ark, Gen 7:1-4 . This command punctually obeyed, Gen 7:5-9 . In the seventeenth day of the second month, in the six hundredth year of Noah's life, the waters, from the opened windows of heaven, and the broken up fountains of the great deep, were poured out upon the earth, Gen 7:10-12 . The different quadrupeds, fowls, and reptiles come unto Noah, and the Lord shuts him and them in, Gen 7:13-16 . The waters increase, and the ark floats, Gen 7:17 . The whole earth is covered with water fifteen cubits above the highest mountains, Gen 7:18-20

Noah's care and diligence in building the ark may be considered, 1. As an effect of his faith in the word of God. God had told him he would shortly drown the world; he believed it, feared the threatened deluge, and, in that fear, prepared the ark. Note, we ought to mix faith with the revelation God has made of his wrath against all ungodliness and unrighteousness of men; the threatenings of the word are not false alarms. Much might have been objected against the credibility of this warning given to Noah. "Who could believe that the wise God, who made the world, should so soon unmake it again, that he who had drawn the waters off the dry land ( ch. i. 9, 10 ) should cause them to cover it again? How would this be reconciled with the mercy of God, which is over all his works, especially that the innocent creatures should die for man's sin? Whence could water be had sufficient to deluge the world? And, if it must be so, why should notice be given of it to Noah only?" But Noah's faith triumphed over all these corrupt reasonings. 2. As an act of obedience to the command of God. Had he consulted with flesh and blood, many objections would have been raised against it. To rear a building, such a one as he never saw, so large, and of such exact dimensions, would put him upon a great deal of care, and labour, and expense. It would be a work of time; the vision was for a great while to come. His neighbours would ridicule him for his credulity, and he would be the song of the drunkards; his building would be called Noah's folly. If the worst came to the worst, as we say, each would fare as well as his neighbours. But these, and a thousand such objections, Noah by faith got over. His obedience was ready and resolute: Thus did Noah, willingly and cheerfully, without murmuring and disputing. God says, Do this, and he does it. It was also punctual and persevering: he did all exactly according to the instructions given him, and, having begun to build, did not leave off till he had finished it; so did he, and so must we do. 3. As an instance of wisdom for himself, thus to provide for his own safety. He feared the deluge, and therefore prepared the ark. Note, when God gives warning of approaching judgments, it is our wisdom and duty to provide accordingly. See Exod. ix. 20, 21 ; Ezek. iii. 18 . We must prepare to meet the Lord in his judgments on earth, flee to his name as a strong tower ( Prov. xviii. 10 ), enter into our chambers ( Isa. xxvi. 20, 21 ), especially prepare to meet him at death and in the judgment of the great day, build upon Christ the Rock ( Matt. vii. 24 ), go into Christ the Ark. 4. As intended for warning to a careless world; and it was fair warning of the deluge coming. Every blow of his axes and hammers was a call to repentance, a call to them to prepare arks too. But, since by it he could not convince the world, by it he condemned the world, Heb. xi. 7 .

C. NOAH'S OBEDIENCE. V.22. Thus did Noah; according to all that God commanded him, so did he. 289. This phrase is very frequent in Scripture. This is the first passage in which praise for obedience to God is clothed in such a form of words. Later we find it stated repeatedly that Moses, the people, did according to all that God commanded them. But Noah received commendation as an example for us. His was not a dead faith, which is no faith at all, but a living and active faith. He renders obedience to God's commands, and because he believes both God's promises and threats, he carefully carries out what God commanded with reference to the ark and the gathering of animals and food. This is unique praise for Noah's faith, that he remains on the royal way — adds nothing, changes nothing and takes nothing from the divine command, but abides absolutely in the precept he has heard. 290. It is the most common and at the same time most noxious sin in the Church, that people either altogether change God's commands or render something else paramount to them. There is only one royal road to which we must keep. They sin who swerve too much to the left by failing to perform the divine commands. Those who swerve to the right and do more than God has commanded, like Saul when he spared the Amalekites, also sin even more grievously than those who turn to the left. They add a sham piety; for, while those who err on the left cannot excuse their error, these do not hesitate to ascribe to themselves remarkable merit. 291. And such error is exceedingly common. God is wont sometimes to command common, paltry, ridiculous and even offensive things, but reason takes delight in splendid things. From the common ones it either shrinks or undertakes them under protest. Thus the monks shrank from home duties and chose for themselves others apparently of greater glamour. Today the great throng, hearing that common tasks are preached in the Gospel, despises the Gospel as a vulgar teaching, lacking in elegance. What noteworthy thing is it to teach that servants should obey their master and children their parents? Such a common and oft-taught doctrine the learned papists not only neglect but even ridicule. They desire rather something unique, something remarkable either for its reputed wisdom or for its apparent difficult character. Such is the madness of man's wisdom. 292. In general it is wisdom to observe not so much the person that speaks as that which he says, because the teacher's faults are always in evidence. But when we consider precepts of God and true obedience, this axiom should be reversed. Then we should observe not so much that which is said, but the person of him who speaks. In respect to divine precepts, if you observe that which is said and not him who speaks, you will easily stumble. This is illustrated by the example of Eve, whose mind did not dwell upon the person who issued the command. She regarded only the command and concluded it to be a matter of small moment to taste the apple. But what injury was thereby wrought to the whole human race! 293. He who observes him that gives the command will conclude that what is very paltry in appearance is very great. The Papists estimate it a slight thing to govern the State, to be a spouse, to train children. But experience teaches that these are very important matters, for which the wisdom of men is incompetent. We see that at times the most spiritual men have here shamefully fallen. When we, therefore, remember him who gives the command, that which is paltry and common becomes a responsibility too great to discharge without divine aid. 294. The Papists, therefore, who look only at the outward mask, like the cow at the gate, can make light of duties toward home and State, and imagine they perform others of greater excellence. In the very fact that they are shameless adulterers, blasphemers of God, defilers of the sanctuary and brazen squanderers of the Church's property, they powerfully testify against themselves that they can in no wise appreciate the paltry, common and vulgar domestic and public duties. 295. In what, therefore, consists the holiness they vaunt? Forsooth, in that on certain days they abstain from meat, that they bind themselves to certain vows, that they have a liking for certain kinds of work. But, I ask you, who has given command to do those things? No one. That which God has enjoined or commanded, they do not respect. They render paramount something else concerning which God has given no command. 296. Hence, the vital importance of this rule, that we observe not the contents of the command but its author. He who fails to do this will often be offended, as I said, by the insignificance or absurdity of a task. God should receive credit for wisdom and goodness. Assuredly that which he himself enjoins is well and wisely enjoined, though human reason judge differently. 297. From the wisdom of God the Papists detract when they consider divinely enjoined tasks as paltry and attempt to undertake something better or more difficult. God is not propitiated by such works, but rather provoked, as Saul's example shows. As if God were stupid, dastardly, and cruel in that he commanded to destroy the Amalekites and all their belongings, Saul conceived a kinder plan and reserved the cattle for the purpose of sacrifice. What else was such action but to deem himself wise and God foolish. 298. Hence Moses rightly commends in this passage Noah's obedience when he says that he did everything the Lord had enjoined. That means to give God credit for wisdom and goodness. He did not discuss the task, as Adam, Eve and Saul did to their great hurt. He kept his eye on the majesty of him who gave the command. That was enough for him, even though the command be absurd, impossible, inexpedient. All such objections he passes by with closed eyes, as it were, and takes his stand upon the one thing commanded by God. This text therefore is familiar as far as hearing it is concerned, but even as to the performance and practice of it, it is known to very few and is extremely difficult.