15. But Jeshurun waxed fat, and kicked—This is a poetical name for Israel. The metaphor here used is derived from a pampered animal, which, instead of being tame and gentle, becomes mischievous and vicious, in consequence of good living and kind treatment. So did the Israelites conduct themselves by their various acts of rebellion, murmuring, and idolatrous apostasy.

     25. of a proud heart—literally, "puffed up of soul"—that is, self-confident, and hence overbearing and litigious.

     37, 38. See on Mt 7:1, 2; but this is much fuller and more graphic.