The testimony is clear. Jesus is the Son of God, and he has overcome the world. The Spirit also testifies about Jesus. That is what this entire letter has been all about: “So that you may know that you have eternal life” (5:13). We have the same desire as John. We want the world around us to know that they, too, have eternal life in God’s Son. What letter can we write with our words and actions so that others can have the same confidence? What can we do in our lives so that others will share in this confidence? In this way, like John, our joy will be complete.