2 Samuel 2:10; 2 Samuel 5:4; 2 Samuel 10:18; 2 Samuel 15:7

10 Ish-bosheth, Saul's son, was forty years old when he became king over Israel, and he was king for two years. The house of Judah, however, followed David.

4 David was thirty years old when he became king, and he reigned forty years.

18 But the Arameans fled before Israel, and David killed charioteers of the Arameans and 40,000 horsemen and struck down Shobach the commander of their army, and he died there.

7 Now it came about at the end of forty years that Absalom said to the king, "Please let me go and pay my vow which I have vowed to the LORD , in Hebron.