2 Samuel 2:12

10Ishbosheth, Saul’s son, was forty years old when he began to reign over Israel, and he reigned two years. But the house of Judah followed David.

11The time that David was king in Hebron over the house of Judah was seven years and six months.

12Abner the son of Ner, and the servants of Ishbosheth the son of Saul, went out from Mahanaim to Gibeon.

13Joab the son of Zeruiah and David’s servants went out, and met them by the pool of Gibeon; and they sat down, the one on the one side of the pool and the other on the other side of the pool.

14Abner said to Joab, “Please let the young men arise and compete before us!” Joab said, “Let them arise!”