51 Before long all the tribes of Israel approached David in Hebron and said, "Look at us - your own flesh and blood! 2 In time past when Saul was our king, you're the one who really ran the country. Even then God said to you, 'You will shepherd my people Israel and you'll be the prince.'" 3 All the leaders of Israel met with King David at Hebron, and the king made a treaty with them in the presence of God. And so they anointed David king over Israel.
Matthew Henry's Commentary on 2 Samuel 5:1-3
Commentary on 2 Samuel 5:1-5
(Read 2 Samuel 5:1-5)
David was anointed king a third time. His advances were gradual, that his faith might be tried, and that he might gain experience. Thus his kingdom typified that of the Messiah, which was to come to its height by degrees. Thus Jesus became our Brother, took upon him our nature, dwelt in it that he might become our Prince and Saviour: thus the humbled sinner takes encouragement from the endearing relation, applies for his salvation, submits to his authority, and craves his protection.