Warfare for Heart Recovery

“When a four year old comes home from Sunday School and announces that he wants to sing you a new song, and what you hear is a mixture of three tunes and four different sets of lyrics, how do you feel as a parent? I’ll tell you: you feel wonderful, because there is a song in the heart of your child. And if any enemy ever came along and opposed that song, you would flatten him—like God did the Moabites and the Philippian jail. God loves to hear your song, no matter how badly you sing. And woe to your enemies when you sing to your Father in heaven!”
-John Piper 1.20.1985 sermon Ambushing Satan with Song