2 Samuel 5:5

In Hebron he reigned over Judah seven years and six months; and in Jerusalem he reigned thirty-three years over all Israel and Judah.

2 Samuel 2:11

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

1 Chronicles 3:4

six were born to him in Hebron; and there he reigned seven years and six months. In Jerusalem he reigned thirty-three years;

1 Kings 2:11

The days that David reigned over Israel were forty years; he reigned seven years in Hebron, and he reigned thirty-three years in Jerusalem.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Seven years

2 Samuel 2:11
The time that David was king in Hebron over the house of Judah was seven years and six months.
1 Kings 2:11
The days that David reigned over Israel were forty years; he reigned seven years in Hebron, and he reigned thirty-three years in Jerusalem.
1 Chronicles 3:4
six were born to him in Hebron; and there he reigned seven years and six months. In Jerusalem he reigned thirty-three years;