John 17:17

Sanctify them through your truth: your word is truth.
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Clement Of Alexandria

AD 215
These, then, who are disgusting even to the heathen poets for their fashions, how shall they not be rejected by the truth?

Cornelius a Lapide

AD 1637
Sanctify them through Thy truth. This signifies not the beginning of sanctification, but its progress and perfection (Rev. xxi.) Confirm and perfect them in holiness; pour into them by the Holy Spirit at Pentecost complete evangelical truth, that they may be filled with wisdom and holiness, both within and without, and thus become in life and doctrine true teachers of the world, Priests and Rulers of the churches, breathing on all their own holiness, as a fire from above. Thy word is truth. (1.) It is not Moses or Philosophers, but Thy word which teaches this evangelical truth. The holiness of Moses and the Jews was merely ceremonial and shadowy. That of Philosophers was either pretended, or else merely moral and natural. That of Christ was supernatural, heavenly, and divine. Others understand by the words, sanctify them truly, that is completely and perfectly, as the Apostle says ( Ephesians 4:24.), in true holiness (the holiness of truth, Vulg.). For perfect and great holiness is re...

John Chrysostom

AD 407
Your word is truth. That is, there is no falsehood in it, and all that is said in it must needs come to pass; and again, it signifies nothing typical or bodily. As also Paul says concerning the Church, that He has sanctified it by the Word. For the Word of God is wont also to cleanse. Ephesians 5:26 Moreover, the, sanctify them, seems to me to signify something else, such as this, Set them apart for the Word and for preaching. And this is made plain from what follows. For, He says, ...

John Chrysostom

AD 407
As Paul also says, Having put in us the word of reconciliation. 2 Corinthians 5:19 For the same end for which Christ came, for the same did these take possession of the world. In this place again the as is not put to signify resemblance in the case of Himself and the Apostles; for how was it possible for men to be sent otherwise? But it was His custom to speak of the future as having come to pass. ...

The Apostolic Constitutions

AD 375
For there is no other God like Thee; for on Thee is our reliance. "Sanctify them by Thy truth: for Thy word is truth."

Knowing this first, that no prophecy of the scripture is of any private interpretation. - 2 Peter 1:20

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