An underlying principle in Cymatics is that a community that engages with sound: music, singing, or drumming together, comes together on a cellular level.
secular songs about religion tend to do things that wouldn't pass muster in a house of worship: assume God's perspective, cast God as a villain, or just take a sardonic view of God's relationship with humankind.
Our recent Hymn Sing Sunday on April 17 profoundly proved that. Not only did they suggest favorite hymns, but started giving wonderful testimony about their meaning.