Reference

Luke 11:5-13
The Disciples' Prayer Continued

I. The Man at Midnight (vs. 5-8)

Wiersbe - We have already seen that prayer is based on sonship ("Our Father"), not on friendship; but Jesus used friendship to illustrate persistence in prayer. God the Father is not like this neighbor, for He never sleeps, never gets impatient or irritable, is always generous, and delights in meeting the needs of His children. The friend at the door had to keep on knocking in order to get what he needed, but God is quick to respond to His children's cries (Luke 18:1-8)....Why does our Father in heaven answer prayer? Not just to meet the needs of His children, but to meet them in such a way that it brings glory to His name. "Hallowed be Thy name." When God's people pray, God's reputation is at stake. The way He takes care of His children is a witness to the world that He can be trusted. Phillips Brooks said that prayer is not overcoming God's reluctance; it is laying hold of His highest willingness. Persistence in prayer is not an attempt to change God's mind ("Thy will be done") but to get ourselves to the place where He can trust us with the answer. 

II. The Master's Message (vs. 9-13)