Tim Keller on Sanctification

“Sanctification is not by ‘works’ but by a continuous re-orienting ourselves to our justification. So sanctification is not moralistic. Yet it takes enormous effort (so it is not quietistic.) When we feed on, remember, and live in accordance with our justification, it mortifies our idols and fills us with an inner joy and desire to please and resemble our Lord through obedience. But the feeding on, remembering, and living in accordance—takes all our effort.”

(Thanks to Tullian Tchividjian for posting this quote at his blog "On Earth As It Is In Heaven")