King James Version
And he brought forth the people that were therein, and put them under saws, and under harrows of iron, and under axes of iron, and made them pass through the brickkiln: and thus did he unto all the cities of the children of Ammon. So David and all the people returned unto Jerusalem.New International Version
and brought out the people who were there, consigning them to labor with saws and with iron picks and axes, and he made them work at brickmaking. He did this to all the Ammonite towns. Then David and his entire army returned to Jerusalem.Catholic Public Domain Version
Also, bringing forth its people, he sawed them, and he drove over them with iron wagons, and he divided them with knives, and he dragged them through brick kilns. So he did to all the citizens of the sons of Ammon. And David returned, with the entire army, to Jerusalem