Sermon: A New Commandment (John 13:21-38)
If the first half of John 13 reveals to us the servanthood of Jesus, the second half of John 13 addresses a closely related subject: the love of Jesus. Just as we must serve as Jesus has served us (John 13:14–15), so also we must love as Jesus has loved us (John 13:34–35). This means that we must not only nurture feelings of affection for our fellow believers, but we must love them by serving them self-sacrificially. This mindset of humility, grace, and love for fellow believers is not only difficult, but impossible in our own strength. Loving one another just as Jesus has loved us runs counter to every instinct in us and to the ways of the world. Therefore, when we learn to love one another by the gospel and the power of the Holy Spirit, a miracle unfolds in our lives—we begin to look like Jesus! As such, our own self-sacrificial love glorifies Jesus, just as Jesus’ self-sacrificial love glorified him at the cross. This idea is at the heart of Jesus’ mission and glory, for Jesus glorifies himself through self-sacrificial love.