One afternoon I was having a discussion with a friend I considered my spiritual mentor about misusing God’s name. “You shall not misuse the name of the Lord your God,” says the third commandment (Ex. 20:7). We may think this only refers to attaching God’s name to a swear word or using His name flippantly or irreverently. But my mentor rarely missed an opportunity to teach me about real faith. He challenged me to think about other ways we profane God’s name.

When I reject the advice of others and say, “God told me to go this way,” I misuse His…