3 He brought forth the people who were therein, and cut (them) with saws, and with iron picks, and with axes. David did so to all the cities of the children of Ammon. David and all the people returned to Jerusalem.
*Minor differences ignored. Grouped by changes, with first version listed as example.
He brought out the people - See this transaction particularly explained in the notes on the parallel places, 2-Samuel 12:30-31 (note).
cut them with saws, &c.--The Hebrew word, "cut them," is, with the difference of the final letter, the same as that rendered "put them," in the parallel passage of Samuel [2-Samuel 12:31]; and many consider that putting them to saws, axes, and so forth, means nothing more than that David condemned the inhabitants of Rabbah to hard and penal servitude.
*More commentary available at chapter level.