A.W. Tozer emphasizes the importance of silence and a closed mouth in prayer, arguing that true communion with God transcends mere requests for personal gain. He reflects on Psalm 39:3, illustrating that a hot heart often arises from a quiet spirit, and that listening is essential before speaking. Tozer warns against the tendency of modern prayer to focus on what we can 'get' from God, urging believers to seek a deeper union with Him. He concludes with a personal prayer for the discipline of silence before God, recognizing its necessity for spiritual growth.