John Gill

But if ye refuse and rebel,.... The Targum is, "and do not receive my Word"; the Messiah, when come, neither his person, nor his doctrines and ordinances: ye shall be devoured with the sword; of the Roman armies, as they were under Titus Vespasian; see Mat 22:7. for the mouth of the Lord hath spoken it; now, by Isaiah, as well as in former times, Lev 26:25.