2 Samuel 8:1-4

After this, David defeated and subdued the Philistines by conquering Gath, their largest town. David also conquered the land of Moab. He made the people lie down on the ground in a row, and he measured them off in groups with a length of rope. He measured off two groups to be executed for every one group to be spared. The Moabites who were spared became David’s subjects and paid him tribute money. David also destroyed the forces of Hadadezer son of Rehob, king of Zobah, when Hadadezer marched out to strengthen his control along the Euphrates River. David captured 1,000 chariots, 7,000 charioteers, and 20,000 foot soldiers. He crippled all the chariot horses except enough for 100 chariots.