49:1-6. Might often prevails against right among men, yet that might shall be controlled by the Almighty, who judges aright; and those will find themselves mistaken, who, like the Ammonites, think every thing their own on which they can lay their hands. The Lord will call men to account for every instance of dishonesty, especially to the destitute.
3. Heshbon … Ai—Nebuchadnezzar, coming from the north, first attacked Ammon, then its brother and neighbor, Moab. As Ai of Ammon had already suffered destruction, Heshbon of Moab being near it might well fear the same fate.
hedges—Their cities being destroyed, the outcasts have no place of shelter save behind the "hedges" of vineyards and gardens; or else the enclosures of their villages.
their king—Melchom, the idol, as the mention of "his priests" shows (compare Jer 48:7).