Because he appointed a day during which he is going to judge the world in righteousness by a man whom he appointed, having provided assurance to all men because he raised him from the dead.
So all the elders of Israel came to the king to Hebron. And king David made a covenant with them in Hebron before LORD, and they anointed David king over Israel.
And the men of Judah came, and there they anointed David king over the house of Judah. And they told David, saying, The men of Jabesh-gilead were those who buried Saul.
O LORD, thou are my God. I will exalt thee. I will praise thy name. For thou have done wonderful things, [even] counsels of old, in faithfulness [and] truth.