II Samuel 2:1, 3, 11

It happened after this that David inquired of the LORD, saying, “Shall I go up to any of the cities of Judah?” And the LORD said to him, “Go up.” David said, “Where shall I go up?” And He said, “To Hebron.”

And David brought up the men who were with him, every man with his household. So they dwelt in the cities of Hebron.

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