Sanctification and Justification

Why, then, are we justified by faith? Because by faith we grasp Christ's righteousness, but which alone we are reconciled to God. Yet you could not grasp this without at the same time grasping sanctification also. For he “is given unto us for righteousness, wisdom, sanctification, and redemption” [I Cor. 1:30]. Therefore Christ justifies no one whom he does not at the same time sanctify. These benefits are joined together by an everlasting and indissoluble bond, so that those whom he illumines by his wisdom, he redeems; those whom he redeems, he justifies; those whom he justifies, he sanctifies…Thus is is clear how true it is that we are justified not without works yet not through works, since in our sharing in Christ, which justifies us, sanctification is just as much included as righteousness.

John Calvin, Institutes of the Christian Religion, bk III, ch. 26.1