A cowboy friend of mine who grew up on a ranch in Texas has a number of colorful sayings. One of my favorites is “It don’t take much water to make good coffee.” And when someone ropes a steer too big to handle or is in some kind of trouble, my friend will shout, “Hold everything you’ve got!” meaning “Help is on the way! Don’t let go!”

In the book of Revelation we find letters to “the seven churches in the province of Asia” (chs. 2–3). These messages from God are filled with encouragement, rebuke, and challenge, and they speak to…