My nerves fluttering, I waited for the phone to ring and the radio interview to start. I wondered what questions the host would ask and how I would respond. “Lord, I’m much better on paper,” I prayed. “But I suppose it’s the same as Moses—I need to trust that you will give me the words to speak.”

Of course I’m not comparing myself with Moses, the leader of God’s people who helped them escape slavery in Egypt to life in the Promised Land. A reluctant leader, Moses needed the Lord to reassure him that the Israelites would listen to him. The…