Since faith embraces Christ, as offered to us by the Father - that is, since he is offered not only for righteousness, forgiveness of sins, and peace, but also for sanctification and the fountain of the water of life - without a doubt, no one can duly know him without at the same time apprehending the sanctification of the Spirit. Or, if anyone desires some plainer statement, faith rests upon the knowledge of Christ. And Christ cannot be known apart from the sanctification of his Spirit. It follows that faith can in no wise be separated from a devout disposition.
Institutes(1559) III.ii.8 John Calvin