The Lord's Prayer is an expression of faith. It assumes that human beings are not self-sufficient but dependent on God. It is not a sign of weakness to pray but a sign of our humanity. Prayer acknowledges our need for God. Prayer is surrender. In his book, The Reaffirmation of Prayer, E. Glenn Hinson says that "the key to human existence lies in surrender to God, putting one's self and one's affairs utterly and with complete child-like trust in God's hands."