Letting the Bible Define Holiness
✒️ Introduction
“Sanctify them through thy truth: thy word is truth.”
— John 17:17 (KJV)
The word sanctify appears over 100 times in the King James Bible. Rather than explain it in a single sentence, God defines it gradually — through use, repetition, and contrast — painting a spiritual picture from Genesis to Revelation.
Most modern Bibles replace sanctify with “make holy,” “set apart,” or “consecrate.” But these replacements lack the richness of the original word. Sanctify is more than a change in position — it’s a divine act of separation for a holy purpose.
Let’s follow how the Bible teaches us what sanctify means.
📜 First Use: The Principle of Separation for God
“And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work…”
— Genesis 2:3
Right from the beginning, sanctify is tied to rest and holiness. God didn’t just “set apart” the seventh day. He blessed it. He sanctified it. He claimed it for Himself — as a holy witness of His finished work.
📖 Defined by Context and Use
“Sanctify unto me all the firstborn…”
— Exodus 13:2
Here, God claims the firstborn for Himself. To sanctify is to take what is common and claim it for a holy purpose — His purpose.
“Let the priests also, which come near to the Lord, sanctify themselves…”
— Exodus 19:22
Sanctification here is tied to spiritual preparation. The priests had to be cleansed and consecrated — not just outwardly, but inwardly — before they could draw near.
“Neither shall ye profane my holy name; but I will be hallowed among the children of Israel…”
— Leviticus 22:32
This verse shows contrast. The opposite of sanctifying is profaning. To hallow or sanctify something is to treat it with sacred reverence — not to mix it with the common or unclean.
✝️ Christ, the Sanctifier
“For both he that sanctifieth and they who are sanctified are all of one: for which cause he is not ashamed to call them brethren.”
— Hebrews 2:11
Jesus is the Sanctifier. Sanctification is not merely an act of separation — it is an act of union with Christ. We are made holy in Him.
“That he might sanctify and cleanse it with the washing of water by the word…”
— Ephesians 5:26
Sanctification happens through the Word. As we receive God’s Word in faith, we are washed, cleansed, and made ready for His use.
✍️ Summary: What Does “Sanctify” Mean?
According to the King James Bible, to sanctify means:
- To set something or someone apart for God Himself
- To purify and cleanse in preparation for holy use
- To transfer ownership from the common to the divine
- To join to God’s purposes in love and truth
It is not merely a ceremonial act — it is a spiritual transformation that touches everything.
Modern Bibles flatten sanctify into “set apart,” missing the personal, covenantal relationship involved. But the KJV preserves the divine weight of the word — letting the Spirit of God define and unfold its glory through scripture.