David: King of Israel: Length of Reign, Forty Years
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1 Kings 2:11
The length of David’s reign over Israel was forty years—seven years in Hebron and thirty-three years in Jerusalem.
1 Chronicles 29:27, 28
The length of David’s reign over Israel was forty years—seven years in Hebron and thirty-three years in Jerusalem. / He died at a ripe old age, full of years, riches, and honor, and his son Solomon reigned in his place.