What does the Bible say about David as a king?

David is recognized as one of the most prominent figures in the Bible, serving as a type of Christ. His lineage is crucial since Jesus is often referred to as the 'Son of David.' The anointing of David as king illustrates God's choice based on the heart rather than outward appearances, leading to the realization that spiritual leadership comes from God’s selection. In 1 Samuel 16:12-13, God commands Samuel to anoint David, showcasing the transition from Saul’s kingship to one that reflects God's heart. David's kingship is intimately connected with the messianic promise of an eternal throne, as seen in the prophecies of the Old Testament, making him a pivotal character in redemptive history.