Prayer is like preaching in that it is a human act also. It is a human act that God has ordained and which he delights in because it reflects the dependence of his creatures upon Him. He has promised to respond to prayer, and his response is just as contingent upon our prayer as our prayer is in accordance with his will. "And this is the confidence which we have before Him, that if we ask anything according to His will, He hears us" (I John 5:14). When we don't know how to pray according to God's will but desire it earnestly, "the Spirit of God intercedes for us according to the will of God" (Romans 8:27).