" People think that what God wills must inevitably take place. This is by no means the case. God wills a great deal of blessing for His people that never comes to them. He wills it most earnestly, but they do not will it, and it cannot come to them. This is the great mystery of man's creation with a free will but also of the renewal of his will in redemption, that God has made the execution of His will dependent on the will of man in many things. "

― Andrew Murray , With Christ in the School of Prayer