It shall be, that he who is taken with the devoted thing shall be burnt with fire, he and all that he has; because he has transgressed the covenant of Yahweh, and because he has done folly in Israel.
and because he hath wrought folly in Israel; as all sin and every transgression of the law is, and was the cause of Israel's turning their backs on their enemies; which, as Abarbinel says, was folly, and made the people of Israel look foolish, mean, and contemptible: the word has also the signification of a dead carcass, and may possibly have respect, to the thirty six men whose death he was the occasion of, Joshua 7:5, and therefore justly ought to die himself.