A thrift-store bargain, the lamp seemed perfect for my home office—the right color, size, and price. Back at home, however, when I plugged in the cord, nothing happened. No light. No power. No juice.

No problem, my husband assured me. “I can fix that. Easy.” As he took the lamp apart, he saw the trouble immediately. The plug wasn’t connected to anything. Without wiring to a source of power, the “perfect” pretty lamp was useless.

The same is true for us. Jesus told His disciples. “I am the vine; you are the branches. If you remain in me and I in you,…