What Does Sanctification Mean A Word Study for Christians

What Does Sanctification Mean A Word Study for Christians

A Bible Dictionary is the fastest way to move from confusion to clarity when a word stops you mid-verse. Pick up any Bible and read the word "sanctification" — most readers nod and keep going, carrying a vague sense it means "being good." It means something sharper than that, and the difference matters for how you read half the New Testament.

This guide compares the four dictionaries you'll actually encounter (Easton's, Smith's, Unger's, Harper's), shows you which one fits your study style, and walks you through a complete word study on sanctification you can finish in one sitting. All the tools mentioned are free and require no account.

On this pageSanctification in Plain English: What the Word Actually MeansThe Hebrew and Greek Behind the WordFour Bible Dictionaries Compared: Which One Fits Your Study StyleThree Stages of Sanctification Most Definitions SkipHow to Run Your Own Sanctification Word Study in Under 20 MinutesWhere to Access Bible Dictionaries Free Online (No Sign-Up Required)Taking Your Word Study Notes Further with the Right Tools

Sanctification in Plain English: What the Word Actually Means

Sanctification means to be set apart for God's use. Not just morally improved. Status changed, direction changed, owner changed. That's the core idea, and it's bigger than personal behavior.

The word shows up across the whole Bible in contexts that stretch well beyond personal ethics. The Sabbath is sanctified in Genesis 2:3 before a single human being has done anything wrong or right. The tabernacle is sanctified. Israel as a nation is sanctified. Objects, days, and people all fall under the same word. That range tells you sanctification is a category move, not just a moral grade.

Here's a concrete picture: a clay pot used only for temple offerings was sanctified. Same clay, same shape. But now it belongs to God's service, kept separate from ordinary use. That's the sanctification meaning Bible word study readers keep circling back to — not "this pot became a better pot," but "this pot now belongs somewhere specific." The word study earns its place because that distinction reshapes how you read dozens of verses.

Start your study by looking up the word in a Bible dictionary before you look at any commentary. The definition anchors everything else.

The Hebrew and Greek Behind the Word

Qadash: the Hebrew root

The Hebrew root is qadash (Strong's H6942). It means to be set apart, consecrated, declared holy. Genesis 2:3 uses it for the Sabbath day: God blessed the seventh day and qadash it. No human action involved. The holiness came from God's designation, not from anything the day did.

Hagiazo: the Greek New Testament word

The Greek equivalent is hagiazo (Strong's G37). Paul uses it in 1 Thessalonians 5:23: "May the God of peace sanctify you completely." The verb tense matters here. It's a single decisive prayer with an ongoing effect in view. The same root gives us hagios (holy) and hagioi (saints) — which is why Paul addresses ordinary church members as "saints" rather than spiritual elites.

Tracing every verse where H6942 or G37 appears is how a word study actually works. You're not reading one verse in isolation; you're reading the whole pattern. Selah has a Strong's interlinear reader that maps every word in the Bible to its Hebrew or Greek number, so you can do this trace without buying software or downloading anything.

Pull up 1 Thessalonians 5:23 in the interlinear, click G37, and read every verse where that root appears. That one step produces more insight than reading three commentaries.

Four Bible Dictionaries Compared: Which One Fits Your Study Style

Easton's Bible Dictionary (1897)

Easton's was written for lay readers. Plain prose, strong theological definitions, especially good on doctrinal terms like sanctification, justification, and grace. If you're doing personal or devotional study, Easton's is your starting point.

Smith's Bible Dictionary (1863)

Smith's leans toward geography, archaeology, and historical background. Better when you want to know where something happened or what the physical setting looked like, not just what a term means theologically.

Unger's Bible Dictionary

Unger's (1957, revised) is more scholarly. It cross-references systematic theology and gives doctrinal terms like sanctification more structural treatment. Pastors and serious students who want precision on how a doctrine fits into the whole system of Christian teaching will find it useful.

Harper's Bible Dictionary

Harper's is academic and critical in tone. It draws on modern archaeology and comparative religion. If you want to see how scholars outside the evangelical tradition read a term, Harper's gives you that perspective. It's not a devotional resource.

Side-by-sideDictionary · Best For · Tone · Free OnlineEaston's (1897) · Personal and devotional study · Plain, accessible · Yes, on SelahSmith's (1863) · Geography and historical background · Descriptive · Yes, on SelahUnger's (1957) · Doctrinal and pastoral study · Scholarly · Purchase requiredHarper's · Academic and critical reading · Critical/analytical · Purchase required

Studying a doctrine? Start here. For sanctification specifically: open Easton's first to get the definition and key verses, then check Unger's if you need the full doctrinal framework. Selah combines Easton's and Smith's in one searchable dictionary with 8,000+ terms, free, no account needed.

Bookmark the dictionary you'll actually use. The best resource is the one open on your screen when you need it.

Three Stages of Sanctification Most Definitions Skip

Most Bible dictionary entries on sanctification give you the definition and a verse list. They skip the structure that makes the doctrine make sense. There are three distinct stages, and confusing them is what produces the question "If I'm already holy, why do I still sin?"

Positional sanctification is the moment of salvation. You are declared holy in Christ (1 Corinthians 6:11, past tense). This is a legal status, not a feeling. It happened once and it holds.

Progressive sanctification is the ongoing work of the Spirit shaping character over a lifetime (2 Corinthians 3:18). This is what most people picture when they say "growing in holiness." It's real, it's slow, and it doesn't cancel the positional status.

Final sanctification (glorification) is the completed work at resurrection, when the sin nature itself is gone (Philippians 3:21). Unger's gives this stage the most space of the four dictionaries. Most lay resources mention it briefly and move on.

Understanding all three resolves the apparent contradiction: "I am already holy" (positional) and "I still struggle with sin" (progressive) are both true at the same time. When you read a verse containing "sanctified," check the tense and context to see which stage the author is addressing. That one habit changes how you read Paul.

How to Run Your Own Sanctification Word Study in Under 20 Minutes

1. Look up 'sanctification' in a Bible dictionary. Easton's on Selah is a free starting point and links directly to related verses and topics.
2. Find the Strong's number for the word in your anchor verse: H6942 for the Hebrew Old Testament, G37 for the Greek New Testament. Use an interlinear reader to locate it.
3. Search every verse where that Strong's number appears. Note the pattern: who is being sanctified, by whom, and for what purpose.
4. Compare two or three translations of your anchor verse to see where translators made different choices. Selah's translation comparison feature surfaces this quickly.
5. Check Matthew Henry's commentary on your verse for how a classic expositor applied the doctrine. It's available free on Selah, queryable by chapter.

Write before you close the tab. After step 5, write three sentences in your own words: what the word means, what the verse is saying, and what that means for you today. Notes you write yourself are the ones you remember. A highlighted Bible is not the same as a written observation.

The whole process fits in one sitting. What you produce is yours, not a summary someone else wrote.

Where to Access Bible Dictionaries Free Online (No Sign-Up Required)

Selah hosts a combined Easton's and Smith's dictionary with 8,000+ entries, fully searchable, no account or payment required. The sanctification entry links directly to related characters, topics, and verses inside the same platform. You don't leave the page to chase a reference.

Free vs. paid: what you actually get. Most Bible apps put dictionary access behind a subscription or a one-time purchase. Selah's combined Easton's and Smith's dictionary is free as part of the core platform, no credit card required. For developers who want to pull dictionary data into their own apps, Selah's free Bible API includes dictionary endpoints with 10,000 free requests per day. If you need Unger's or Harper's digitally, those require purchase through a Bible software platform like Logos or Accordance.

The practical move: use Selah's dictionary for daily word studies. When a doctrinal question needs deeper cross-referencing than Easton's provides, that's when a purchased resource like Unger's earns its cost.

Taking Your Word Study Notes Further with the Right Tools

Good word study notes have four fields: the Strong's number, the definition from at least one dictionary, the key verses, and your own observation in plain language. Four fields, not a paragraph of highlights.

The Selah note-taking app gives you a Notion-like mobile editor built specifically for Bible study. You can read together live on calls, capture AI sermon notes, and keep your sanctification word study in a structured format you can return to. It's built for the kind of study this article describes.

Download the Selah App for AndroidA Notion-like mobile editor for Bible study, live reading together on calls, and AI sermon note-taking. Your word study notes belong somewhere you can find them.Get it on Google Play →

For pastors turning a word study into a sermon, Sermon Mate is built specifically for sermon preparation and note organization. A word study on sanctification is raw material. Sermon Mate is where it becomes a message.

The gap most Bible students hit is not a lack of resources. It's doing the research and never writing it down in a form they can return to. Open the dictionary entry, run the Strong's trace, and write three sentences before you close the tab. That's the whole discipline, and it compounds over time.

Frequently asked questions

What is the difference between justification and sanctification?

Justification is a one-time legal declaration: God counts you righteous because of Christ's work, not yours. Sanctification is the ongoing process of being set apart and conformed to that new status over time. Think of justification as the verdict and sanctification as the life that follows the verdict. Both are gifts, but they operate on different timescales.

What does the Greek word 'hagiazo' mean and where does it appear in the New Testament?

Hagiazo means to make holy, to set apart, or to consecrate — it is the verb form behind the noun hagiasmos (sanctification). It appears over two dozen times in the New Testament, including John 17:17 ('Sanctify them through your truth'), 1 Corinthians 6:11, and 1 Thessalonians 5:23. You can trace every occurrence using the Strong's interlinear reader at Selah, which maps each English word back to its Greek root.

Is Easton's Bible Dictionary reliable for modern Bible study?

Easton's (1897) is reliable for definitions rooted in the biblical text itself — word meanings, historical context, and theological summaries hold up well. Where it shows its age is in archaeology and geography, since major discoveries like the Dead Sea Scrolls came after it was written. Use it confidently for word studies and theological terms, but pair it with a more recent source for questions about ancient sites or manuscript evidence.

Can I use a Bible dictionary and a concordance together, and how do they differ?

Yes, and using both is the standard move for a serious word study. A concordance lists every verse where a word appears so you can see its range of use. A Bible dictionary explains what the word means, its cultural background, and how it functions theologically. Start with the concordance to find all the occurrences, then use the dictionary to understand what you are looking at.

What is glorification and how does it relate to sanctification?

Glorification is the final stage of salvation: the complete transformation of the believer's body and nature at the resurrection, when sanctification reaches its end point. Sanctification is the process; glorification is the completion. Paul lays out the sequence in Romans 8:30 — called, justified, glorified — with sanctification understood as the road between justification and that final destination.

Which Bible dictionary works best for terms like grace, mercy, and covenant?

For those three terms specifically, Easton's gives solid, text-grounded definitions that trace the words through both Testaments. Smith's is slightly more concise and works well if you want a quick orientation before digging deeper. For covenant especially, you will want to follow up in a Strong's interlinear to see whether the Hebrew is berith or the Greek is diatheke, because the two words carry different legal weight and that distinction changes how you read passages like Hebrews 9.

Start Your Word Study FreeSelah puts an 8,000+ term Bible dictionary, Strong's interlinear, Matthew Henry's commentary, and 272+ character profiles in one free platform — no paywall, no account required to start reading.Open Selah Free →