2 Samuel 23:39

23:39 and Uriah the Hittite. Altogether there were thirty-seven.

2 Samuel 5:4

5:4 David was thirty years old when he began to reign and he reigned for forty years.

2 Samuel 6:1

David Brings the Ark to Jerusalem

6:1 David again assembled all the best men in Israel, thirty thousand in number.

2 Samuel 5:5

5:5 In Hebron he reigned over Judah for seven years and six months, and in Jerusalem he reigned for thirty-three years over all Israel and Judah.

2 Samuel 23:13

23:13 At the time of the harvest three of the thirty leaders went down to David at the cave of Adullam. A band of Philistines was camped in the valley of Rephaim.