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).
As we have previously studied, God is the believer’s source of joy. Specifically, God’s indwelling presence makes this an accessible virtue. The Lord indwells those who are saved and does so through the person of the Holy Ghost. It should, therefore, come as no surprise that the disciples who were filled with the Holy Ghost were also filled with joy. God identifies the nature of the kingdom of God as “righteousness, and peace, and joy in the Holy Ghost” (Romans 14:17). This is why the Bible includes joy and peace when it defines the ninefold fruit of the Spirit (Galatians 5:22). This is why the believers in Thessalonica received the word “with joy of the Holy Ghost” (1 Thessalonians 1:6). The more the Holy Ghost has control, the more joy from the Lord a man will experience.