As a young woman, I imagined myself married to my high school sweetheart—until we broke up. My future yawned emptily before me and I struggled with what to do with my life. At last I sensed God leading me to serve Him by serving others and enrolled in seminary. Then the reality crashed through that I’d be moving away from my roots, friends, and family. In order to respond to God’s call, I had to leave.

Jesus was walking beside the Sea of Galilee when He saw Peter and his brother Andrew casting nets into the sea, fishing for a living.…