Leo the Great

In rendering service to the grace of God, we are not only made subject to our King through obedience but are even joined to him through the will. If we are of one mind with him (willing what he wills, disapproving of what he disapproves), he himself will bring us victory in all our battles. He who has given the "will" will bestow also the ability. In this way can we "cooperate" with his works, speaking that prophetic utterance in the exultation of faith: "The Lord is my light and my salvation. Whom shall I fear? The Lord is the defender of my life. Of whom shall I be afraid?"