In John 5:1-18, Jesus heals a man who had been unable to walk for 38 years—but the miracle quickly becomes a controversy when it happens on the Sabbath. As Jesus challenges assumptions about healing, religious tradition, and rest, the story ultimately turns to the question at the heart of John’s Gospel: Who is Jesus? When Jesus calls God His Father and makes Himself equal with God, the evidence in John’s case continues to build—and each of us must decide what we believe about Him.