Total depravity means “that every sinner is totally destitute of that love to God which is the fundamental requirement of the law (Deut. 6:4f; Matt. 22:37); that he is supremely given to a preference of himself to God (2 Tim. 3:2-4); that he has an aversion to God which on occasion becomes active enmity to him (Rom. 8:7); that his every faculty is disordered and corrupted (Eph. 4:18); that he has no thought, feeling, or deed of which God can fully approve (Rom. 7:18); and that he has entered upon a line of constant progress in depravity from which he can in no wise turn away in his own strength (Rom. 7:18).”
– Henry C. Thiessen, Lectures in Systematic Theology (Grand Rapids: Eerdmans, 1987), 191-192.