1872 · Charles Hodge, Systematic Theology, vol. 3 (Part III, chapters XV-XX; Part IV, Eschatology) 3.18.2
Assuming, then, that we have in this chapter an account of the experience of a true and even of an advanced Christian, we learn that in every Christian there is a mixture of good and evil; that the original corruption of nature is not entirely removed by regeneration; that although the believer is made a new creature, is translated from the kingdom of darkness into the kingdom of God’s dear Son, he is but partially sanctified; that his selfishness, pride, discontent, worldliness, still cleave to, and torment him, that they effectually prevent his “doing what he would,” they prevent his living without sin, they prevent his intercourse with God being as intimate and uninterrupted as he could and does desire. He finds not only that he is often, even daily, overcome so as to sin in thought, word, and deed, but also that his faith, love, zeal, and devotion are never such as to satisfy his own conscience; much less can they satisfy God. He therefore is daily called upon to confess, repent, and pray for forgiveness. The Apostle designates these conflicting principles which he found within himself, the one, indwelling sin; “sin that dwelleth in me;” or the “law in my members;” “the law of sin;” the other, “the mind,” “the law of my mind,” “the inward man.” His internal self, the Ego, was sometimes controlled by the one, and sometimes by the other. We learn, further, that the control of the evil principle is resisted, that subjection to it is regarded as a hateful bondage, that the good principle is in the main victorious, and that through Christ it will ultimately be completely triumphant. Sanctification therefore, according to this representation, consists in the gradual triumph of the new nature implanted in regeneration over the evil that still remains after the heart is renewed. In other words, as elsewhere expressed, it is a dying unto sin and living unto righteousness. (1 Pet. ii. 24.)