Before going to His death, Jesus prays for the unity of His followers. He promises that by this unity the love and glory of God will be revealed, and the world would believe that God sent Him. In this first of a two-part lesson, we examine why this unity is so difficult and how to pursue it. We address the power of our tongues to destroy unity in the church, including through slander and gossip. We then turn to how the tongue can be used to build unity by courageously speaking the truth to one another with a heart of love and concern. In the second lesson, we address Jesus' teachings on resolving conflict in His church.