Jonathan, the son of King Saul, was a faithful friend to David despite the fact that David would eventually take Jonathan's place as king. Jonathan maintained good communication with David, helped him in difficult situations, advised him, and prayed for him. Their friendship continued even after Jonathan's death, as David mourned him and took care of Jonathan's descendants. Jonathan trusted in God's plans even when they went against his own ambitions of becoming king, demonstrating humility and acceptance of God's will.