Johnathan and David were true friends and they showed unfailing kindness to each other as God gave them the opportunity. In this sermon we see that friendship shows unfailing kindness and that means being willing to speak up when a friend is in mortal peril. That means being willing to warn them of the mortal disease that all people have, which is called original sin. After warning them, we have the joy of showing them their Savior, who is the best friend of all sinners. We also get to show them how Jesus is ruling every day in their lives.