I Kings 18:26-39; Matthew 6:7-8 Jesus is exposing the hypocrisy of our prayer life. His solution is really secret communion with the Father.
Daniel 6:6-10; Matthew 6:5-6 Prayer is the heartbeat of the Christian life. It's the very fuel that enables and empowers the Church of Jesus Christ.
1 Samuel 16:1-7; Matthew 6:1-4 Because the Father sees and rewards the hidden intentions of His covenant people, disciples must practice piety for His glory rather than for human applause.