Love does more than make “the world go round,” as an old song says. It also makes us immensely vulnerable. From time to time, we may say to ourselves: “Why love when others do not show appreciation?” or “Why love and open myself up to hurt?” But the apostle Paul gives a clear and simple reason to pursue love: “These three remain: faith, hope and love. But the greatest of these is love. Follow the way of love” (1 Cor. 13:13–14:1).

“Love is an activity, the essential activity of God himself,” writes Bible commentator C. K. Barrett, “and when men…