And David numbered the people that were with him, and set captains of thousands and captains of hundreds over them.
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George Leo Haydock
Hundreds. Josephus only allows David 4000 men. But his army seems to have been pretty numerous, since he divides it into three parts, and appoints three head commanders, with officers of a thousand, under them. See ver. 4. (Calmet)
He designed to lead them to battle himself, if the people had not dissuaded him. (Salien)