1 Kings 2:11
David had reigned over Israel for 40 years. He reigned in Hebron for seven years and in Jerusalem for 33 years.
2 Samuel 5:4-5
David began to reign when he was 30 years old, and he reigned 40 years.
1 Chronicles 29:26-27
Jesse's son David reigned as king over all of Israel,
Treasury of Scripture Knowledge
Summary
And the days that David reigned over Israel were forty years: seven years reigned he in Hebron, and thirty and three years reigned he in Jerusalem.
Reigned over
Bible References
Reigned over
2 Samuel 5:4
David began to reign when he was 30 years old, and he reigned 40 years.
1 Chronicles 29:26
Jesse's son David reigned as king over all of Israel,