3 Joab said, "May Yahweh make his people a hundred times as many as they are. But, my lord the king, aren't they all my lord's servants? Why does my lord require this thing? Why will he be a cause of guilt to Israel?"
*Minor differences ignored. Grouped by changes, with first version listed as example.
And Joab answered, The LORD make his people an hundred times so many more as they [be]: but, my lord the king, [are] they not all my lord's servants? why then doth my lord require this thing? why will he be a cause of (c) trespass to Israel?
(c) It was a thing indifferent and usual to number the people, but because he did it for ambitious reasons, as though his strength stood in his people, God punished him.
why will he be a cause of trespass to Israel?--or bring an occasion of punishment on Israel. In Hebrew, the word "sin" is often used synonymously with the punishment of sin. In the course of Providence, the people frequently suffer for the misconduct of their rulers.
Why, &c. - Or, why should this be a cause of trespass, or an occasion of punishment to Israel? God commonly punishes the people for the sins of their rulers, because they are for the most part guilty of their sins in one kind or other; or at least God takes this occasion to punish people for all their sins.
*More commentary available at chapter level.