Sanctification is not regeneration. The very words teach us that. They are not the same, do not mean the same thing, and are not used synonymously in the Bible, Hymn Book, standards, religious biographies, and testimony of Christians. They are felt to represent two different things. Justification means pardon; conversion, a turning about; regeneration means renovation, reproduction, entering upon a new life, while sanctification means the act of being made holy. If regeneration and sanctification mean the same, and include the same work, then 1st Corinthians 1. 30 becomes senseless, and should read thus: “But of him are ye in Christ Jesus, who of God is made unto us regeneration and regeneration and regeneration and regeneration.” But the two words are different, and refer to different works wrought supernaturally in the soul, and so the passage reads: “Who of God is made unto us wisdom, and righteousness, and sanctification, and redemption.” The word “righteousness” should be translated “justification.” Again, the two words, representing different works, follow each other in point of time.
To the Thessalonians, who were Christians, and possessed joy in the Holy Ghost, Paul writes that God wanted them to be sanctified. He said the same thing, in substance, to the Romans, the Corinthians, and to the Hebrews. Sanctification, or Christian perfection, comes after regeneration. The Saviour himself recognized this order, for while in the fifteenth chapter of John he tells his disciples that they are clean through his word, yet a little while after he informs them that they must yet be sanctified, which sanctification, we remember, took place on Pentecost. – Beverly Carradine
–Pastor Ward Clinton