2 Samuel 5:1-6

Then came all the tribes of Israel to David unto Hebron, and spake, saying, Behold, we are thy bone and thy flesh. In times past, when Saul was king over us, it was thou that leddest out and broughtest in Israel: and Jehovah said to thee, Thou shalt be shepherd of my people Israel, and thou shalt be prince over Israel. So all the elders of Israel came to the king to Hebron; and king David made a covenant with them in Hebron before Jehovah: and they anointed David king over Israel. David was thirty years old when he began to reign, and he reigned forty years. In Hebron he reigned over Judah seven years and six months; and in Jerusalem he reigned thirty and three years over all Israel and Judah. And the king and his men went to Jerusalem against the Jebusites, the inhabitants of the land, who spake unto David, saying, Except thou take away the blind and the lame, thou shalt not come in hither; thinking, David cannot come in hither.