One spring after a particularly dreary winter during which she helped a family member through a long illness, Emma found encouragement each time she walked past a cherry tree near her home in Cambridge, England. Bursting out at the top of the pink blossoms grew blossoms of white. A clever gardener had grafted into the tree a branch of white flowers. When Emma passed the unusual tree, she thought of Jesus’s words about being the Vine and His followers the branches (John 15:1–8).

By calling Himself the Vine, Jesus was speaking of an image familiar to the Israelites in the Old…