God needs our consent in order to work in our lives, because He won't force his will on us. When we show reverence to God and cooperate with His will in our lives, we are "working out our own salvation with fear and trembling." The Bible encourages us to allow God's word to inform and replace our thinking, and when we do, He even gives us the the willingness to cooperate with Him. Phil. 2, Ps. 110, Rom. 12, Heb. 13