How does David's life reflect the need for a mediator?

David's life reflects the need for a mediator through his role as an intercessor for Israel. In 1 Samuel 16, David is chosen as a man after God's own heart who will lead the people, serving as a picture of Jesus Christ — our ultimate mediator. The biblical narrative shows that just as the people of Israel needed someone to stand between them and God, so do all people. The prophets, including David, served this role imperfectly, pointing to the perfect mediator, Jesus Christ. As described in Deuteronomy 18:18, God promises to raise a prophet like Moses, fulfilled in Christ, who intercedes for His people perfectly and fully reconciles us to God.