David: The Shepherd King by W. Philip Keller

This is the sequel to Phillip Keller's popular "David: The Time of Saul's Tyranny" and takes the reader event by event throughout the rest of David's life, his years as king of Israel. David not only shaped his own time, he also transformed Israel's sense of national identity and made her aware of God's purpose in choosing her as His people. 

God's call to the shepherd boy David has been validated. Goliaths is dead. So is the jealous King Saul. Now what will David do with the clear path of leadership before him? Will it be a challenge that will drive him to his knees, calling on God's leadership? Or will the adage that "power corrupts" be proved true? It is one thing to herd sheep, and quite another to shepherd people. These are the kinds of issues which Phillip Keller probes perceptively in David: The Shepherd King.