II Samuel 5:1-5 A Kingdom United Via A Covenant.
The people of Israel come to David at Hebron and confess three key reasons why they now wanted to shift their allegiance to David. First of all, David was not a foreigner, but rather flesh and bone with them, as the law required (v. 1 Cf. Dt. 17:15). Secondly, by his acts David proved himself to be the true defender of the nation, leading them in and out like the good shepherd that he was (v. 2a Cf. I Sa. 18:5, 13, 16). Finally, and most important of all, the LORD of the covenant said to him “You shall shepherd My people Israel, and be ruler over Israel” (v. 2 Cf. I Sa. 16:1). Based on these three reasons, “all the elders of Israel came to the king at Hebron, and king David made a covenant with them at Hebron before the LORD. And they anointed David king over Israel” (v. 3). David reigned as king over Judah 7 ½ years and over Israel 33 Israel for an approximate reign of 40 years (vv. 4-5). What is significant here is that even though the LORD had already anointed David as king, as with Judah, so now with Israel, it still required a loyalty oath of the people via a covenantal bond.