Having served in World War I, C. S. Lewis was no stranger to the stresses of military service. In a public address during the Second World War, he eloquently described the hardships a soldier has to face: “All that we fear from all the kinds of adversity . . . is collected together in the life of the soldier on active service. Like sickness, it threatens pain and death. Like poverty, it threatens ill lodging, cold, heat, thirst, and hunger. Like slavery, it threatens toil, humiliation, injustice, and arbitrary rule. Like exile, it separates you from all you love.”

The apostle…