The heart is the part of man which God chiefly notices in religion. The bowed head, and the bended knee–the grave face and the rigid posture–the ritual response, and the formal amen–all these together do not make up a spiritual worshiper. The eyes of God look further and deeper. He requires the worship of the heart. “My son,” he says to every one of us, “Give me your heart.” - J.C. Ryle
Expository Thoughts on the Gospels: Mark, [Carlisle, PA: Banner of Truth, 1985], 136.