Many Christians find private prayer a difficult duty, and thus they either totally neglect it, or are negligent in their performance of it. In Private Prayer: A Christian Duty, Puritan pastor Oliver Heywood illustrates the necessity of spending time in private prayer each day. Using Matthew 6:6 as his text ("But when you pray, go into your room and shut the door, and pray to your Father who is in secret. And your Father who sees in secret will reward...