And the faith which has the true stamp upon it accepts Christ not only as a justification but also as a sanctification : in fact, the one is impossible without the other. For Christ is not to be divided and His benefits are inseparable from His person. He is at the same time our wisdom and our righteousness, our sanctification and our redemption (1 Cor. 1:30). Such He became for us of God and as such He was given us by God.

The sanctification which we must share, therefore, lies perfectly achieved in Christ. There are many Christians who, at least in their practical life, think very differently about this. They acknowledge that they are justified through the righteousness which Christ has accomplished, but they maintain or at least act as though they hold that they must be sanctified by a holiness that they must themselves achieve. If this were true, then we, in flat contradiction of the apostolic testimony, would not be living under grace in freedom but under the bondage of the law. However, the evangelical sanctification is distinguished just as well from the legal one as the righteousness of God revealed in the gospel is distinguished, not in its content but in the mode of sharing it, from that which was demanded by the law. It consists of this : that in Christ God gives us the perfect sanctification along with the justification, and that He ives us this as an internal possession through the regenerating and renewing operation of the Holy Spirit.

Bavinck, Our Reasonable Faith, p. 476.