Andrew Murray emphasizes the infinite fatherliness of God, illustrating that just as earthly fathers provide for their children, our heavenly Father will give even more good gifts to those who ask Him. He encourages believers to live as children of God, fostering a relationship of love and obedience that enhances the power of prayer. Murray explains that true childlike living is essential for effective prayer, and that understanding God's love as a Father is crucial for experiencing answered prayers. He reassures that even in our weaknesses, a sincere heart seeking to live in obedience will be heard by God. Ultimately, the sermon calls for a deeper understanding of God's fatherly love, which is foundational to a vibrant prayer life.