2 Samuel 5:5

In Hebron he reigned over Judah seven years and six months,
&c.] So long the kingdom of Israel continued in the house of Saul after his death; and by this it appears that David was near thirty eight years of age when the elders of Israel came and made him their king:

and in Jerusalem he reigned thirty and three years over all Israel and
Judah;
which in all made forty years and six months, see ( 1 Kings 2:11 ) ; upon his being made king over all the tribes, as soon as he had taken the strong hold of Zion, which he immediately attacked, as follows, he removed the seat of his kingdom from Hebron to Jerusalem.