The reason that this unity is necessary is stated in the prayer of Jesus, "that the world may believe that thou hast sent me" (John 17:21). the salvation of the world by the preaching of the gospel is the task of Christ and His church. The accomplishing of this goal has been hindered by division into many denominations and sects. Such division wastes time, energy, money and confuses those who seek for truth. The world cannot be won till the followers of Christ are one.