God's children are supposed to be easily recognizable through their love one for another (John 13:35). Today's passage teaches Christians to be both kind and forgiving. In the midst of these two exemplary qualities, the Lord desires His children to show forth a tender heart. This means that our hearts ought to be easily moved when other believers are experiencing either joy or distress in their lives (Romans 12:15). Unfortunately, instead of exemplifying a tender heart, far too many believers are becoming more like the world by displaying a divisive spirit and by devouring one another (Galatians 5:15). Believers who are hard-hearted toward others are generally hard-hearted toward the Lord as well (1 John 3:17).
The Lord wants His children to have joy and that without limitations. He wants Christians to experience the fulness of joy that only comes from right relationships. This fulness only exists in the lives of believers as certain conditions are met. The right relationship involves fellowship with God which in turn evolves into the right kind of fellowship with other believers. According to today's passage, the words of the Lord Jesus bring fulness of joy to the saint of God. Additionally, answered prayer offers fulness of joy (John 16:24). In addition to our fellowship with the Lord, the Bible suggests that fellowship with other believers also yields fulness of joy (2 John 1:12). Every astute Bible student recognizes that these two fellowships are inextricably linked (1 John 1:3). No dedicated Christian can experience true fellowship with other dedicated believers without first having the right kind of fellowship with God Almighty.