In this day of liberalism, the Biblical doctrine of Sanctification has become almost lost. What is it? I love how J.C Ryle explains it, in his classic Book "Holiness".
"Sanctification is the outcome and inseparable consequence of regeneration. He that is born again and made a new creature receives a new nature and a new principle, and always lives a new life. A regeneration which a man can have, and yet live carelessly in sin, or worldliness, is a regeneration invented by uninspired theologians, but never mentioned in Scripture. In a word, where there is no sanctification, there is no regeneration, and where there is no holy life there is no new birth." ~ "Holiness" by J.C. Ryle, pg 21
"Sanctification is the outcome and inseparable consequence of regeneration. He that is born again and made a new creature receives a new nature and a new principle, and always lives a new life. A regeneration which a man can have, and yet live carelessly in sin, or worldliness, is a regeneration invented by uninspired theologians, but never mentioned in Scripture. In a word, where there is no sanctification, there is no regeneration, and where there is no holy life there is no new birth." ~ "Holiness" by J.C. Ryle, pg 21