"But while the Spirit of God is thus the author of sanctification, yet there is a
visible agency employed that must not be forgotten. "Sanctify them," said Jesus,
"in the truth; your word is truth." The passages of Scripture that
prove that the instrument of our sanctification is the Word of God are numerous.
The Spirit of God brings to our minds the precepts and doctrines of truth and
applies them with power. These are heard in the ear, and being received in the
heart, they work in us to will and to do God's good pleasure."
Read The Tool of Sanctification, by Alistair Begg, Truth for Life Daily, at One Place.
Sanctify them in the truth; Your word is truth.
Your word is a lamp to my feet And a light to my path.
Therefore if anyone is in Christ, he is a new creature; the old things passed away; behold, new things have come.
2 Corinthians 5:17