Matthew Poole and continuators on Jeremiah 5:13

13 And the prophets shall become wind, and the word is not in them, thus shall it be done unto them.

A proverbial speech very frequent, not in common language only, but Scripture also, Iob 6.26. Eccle. 5.16. and elsewhere, i. e. all the Prophets threats shall come to nothing, and thus they scoffed at them. Tush what do they signifie? they are but bruta fulmina, see 2 Chron. 36.15, 16.

This possibly they give as the reason that they apprehend the Prophets words to be but as Wind, because they are not from God, they speak but dreams of their own fancying.

It shall fall upon their own heads, that have thus threatned us, not upon us; or we will kill them with the Sword, for thus vainly threatning us, we will use them like false Prophets, as they are, and we shall see in the sequel of this prophesie how they used Ieremiah, or it may be an imprecation, q. d. may it fall upon their own heads, thus the Heb. so be it unto them.