King James Version

What Does John 17:17 Mean?

John 17:17 in the King James Version says “Sanctify them through thy truth: thy word is truth. — study this verse from John chapter 17 with commentary, cross-references, and original Greek word analysis.

Sanctify them through thy truth: thy word is truth.

John 17:17 · King James Version


Context

15

I pray not that thou shouldest take them out of the world, but that thou shouldest keep them from the evil.

16

They are not of the world, even as I am not of the world.

17

Sanctify them through thy truth: thy word is truth.

18

As thou hast sent me into the world, even so have I also sent them into the world.

19

And for their sakes I sanctify myself, that they also might be sanctified through the truth. sanctified: or, truly sanctified


Commentaries4 scholars

KJV Study CommentaryPublic Domain
Jesus prays 'Sanctify them through thy truth: thy word is truth' (hagiason autous en te aletheia, ho logos ho sos aletheia estin). The verb hagiazo means to make holy, to set apart, to consecrate. Jesus prays for disciples' sanctification - progressive holiness through truth. The phrase en te aletheia (in/by/through truth) indicates truth as means and sphere of sanctification. Jesus then identifies truth: 'thy word is truth' (ho logos ho sos aletheia estin). God's word (logos) is truth itself, not merely containing truth. This establishes Scripture's authority and sanctifying power. Sanctification is not mystical technique but occurs through engagement with God's revealed word. Truth here encompasses both propositional revelation and personal truth (Christ Himself is truth, 14:6). Progressive holiness requires continuous exposure to and alignment with God's word.

KJV Study — Public Domain

Historical & Cultural Context

Jesus prays for disciples hours before His arrest, anticipating their ministry after His departure. The prayer's themes - unity, sanctification, protection - address post-ascension church needs. In Jewish thought, sanctification meant separation to God for holy purposes. Priests, Levites, vessels, and sacrifices were sanctified. Jesus prays for disciples' sanctification not through ritual but through truth. Early church valued Scripture as means of grace - public reading in worship, private meditation, memorization. Monasticism structured life around lectio divina. Reformation doctrine of sola scriptura relied on this verse - Scripture alone is sufficient for faith and practice because God's word is truth. Pietist and Puritan movements emphasized biblical saturation for growth in holiness. Modern neglect of Scripture correlates with spiritual anemia. This verse grounds sanctification in revelation, not subjective experience.

Reflection Questions

  1. How does God's word function as means of sanctification - what is the mechanism by which truth produces holiness?
  2. What is the relationship between Jesus as truth (14:6) and the Father's word as truth?

Compare 4 commentaries from different scholars and time periods for a richer understanding.


Original Language Analysis

Greek · 12 words
ἁγίασον1 of 12

Sanctify

G37

to make holy, i.e., (ceremonially) purify or consecrate; (mentally) to venerate

αὐτοὺς2 of 12

them

G846

the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons

ἐν3 of 12

through

G1722

"in," at, (up-)on, by, etc

τῇ4 of 12
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

ἀλήθειά5 of 12

truth

G225

truth

σου·6 of 12

thy

G4675

of thee, thy

7 of 12
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

λόγος8 of 12

word

G3056

something said (including the thought); by implication, a topic (subject of discourse), also reasoning (the mental faculty) or motive; by extension, a

9 of 12
G3588

the (sometimes to be supplied, at others omitted, in english idiom)

σὸς10 of 12

thy

G4674

thine

ἀλήθειά11 of 12

truth

G225

truth

ἐστιν12 of 12

is

G2076

he (she or it) is; also (with neuter plural) they are


Study Guide

Historical Context

This verse is found in the book of John. Understanding the historical and cultural background helps illuminate its meaning for the original audience and for us today.

Theological Significance

John 17:17 contributes to our understanding of God's character and His relationship with humanity. Consider how this verse connects to the broader themes of Scripture.

Cross-References

Verses related to John 17:17 from Treasury of Scripture Knowledge

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