Charles Ellicott Commentary Isaiah 56:9

"All ye beasts of the field, come to devour, [yea], all ye beasts in the forest." — Isaiah 56:9 (ASV)

All ye beasts of the field... —The sudden change of tone indicates that we enter on an entirely new section, which extends to the close of Isaiah 57. The contents of that section fit in with the assumption of its having been written early in the reign of Manasseh, better than with that of a date after the exile. The opening words summon the enemies of Israel to do their work of punishment, and this is followed naturally by a denunciation of the sins which had made it necessary. For the form of the summons, compare Ezekiel 34:8 and Jeremiah 12:9.