“The body of Christ” is a mysterious phrase used more than 30 times in the New Testament. The apostle Paul especially settled on that phrase as an image of the church. After Jesus ascended to heaven, He turned over His mission to flawed and bumbling men and women. He assumed the role of head of the church, leaving the tasks of arms, legs, ears, eyes, and voice to the erratic disciples—and to you and me.

Jesus’ decision to operate as the invisible head of a large body with many parts means that He often relies on us to help one another…