The Doctrine of Sanctification involves more than a mere moral reformation of character. Sanctification is brought about by the power of the truth. Sanctification is the work of Holy Spirit. Holy Spirit brings the whole nature continuously under the influences of the new gracious principles implanted in the soul of the repentant. At the moment of Regeneration, the moment of Salvation, Sanctification is the carrying on to perfection the work begun in Regeneration. This Sanctifying Regeneration extends to the whole man Romans 6:13; II Corinthians 4:6; Colossians 3:10; I John 4:7 & I Corinthians 6:19. It is the special office of Holy Spirit in the plan of Redemption to carry on this work I Corinthians 6:11 & II Thessalonians 2:13.
Faith is instrumental in securing Sanctification in which it:
(1) secures union to Christ Galatians 2:20
(2) brings the believer into living contact with the truth, whereby he is led to yield obedience to the commands and embracing the promises of God for this life and that which is to come.
The perfection of Sanctification is not attainable in this life I Kings 8:46; Proverbs 20:9; Ecclesiastes 7:20; James 3:2; I John 1:8. See Paul's account of himself in Romans 7:14-25; Philippians 3:12-14 & I Timothy 1:15. Then also there are the confessions of David Psalms 19:12-13 & 51. Other verses of Moses Psalms 90:8, of Job 42:5-6, and of Daniel 9:3-20. "The more holy a man is, the more humble, self-renouncing, self-abhorring, and the more sensitive to every sin he becomes, and the more closely he clings to Christ. The moral imperfections which cling to him he feels to be sins, which he laments and strives to overcome. Believers find that their life is a constant warfare, and they need to take the kingdom of heaven by storm, and watch while they pray. They are always subject to the constant chastisement of their Father's loving hand, which can only be designed to correct their imperfections and to confirm their graces. And it has been notoriously the fact that the best Christians have been those who have been the least prone to claim the attainment of perfection for themselves."