In my neighborhood, religious inscriptions abound—on plaques, walls, doorposts, commercial vehicles, and even as registered names of businesses. By the Grace of God reads an inscription on a mini-bus; God’s Divine Favor Bookshop adorns a business signboard. The other day I couldn’t help smiling at this one on a Mercedes Benz: Keep Off—Angels on Guard!

But religious inscriptions, whether on wall plaques, jewelry, or T-shirts, are not a reliable indicator of a person’s love for God. It’s not the words on the outside that count but the truth we carry on the inside that reveals our desire to be changed by…