John Trapp on Jeremiah 5:14-15

Ver. 14. Becauſe ye ſpeak this word] Ungodly men ſhall one day anſwer (with all the world on fire about their ears) for all their hard and haughty ſpeeches, Jude 15. They ſhall find that neither their own words are wind, but ſuch as they ſhall give a ſad account of: nor the Prophets words wind, unleſs it be to blow them into the bottomleſs lake, and to torment their conſciences, haply, in the mean while, more then wind doth mens bodies, when gotten once into the veines, or bowels.

Behold I will make my words in thy mouth fire] That's ſomewhat worſe then wind. Oh fear this fire, vengeance is in readineſs for the diſobedient, 2 Cor: 10.5. every whit as ready in Gods hand as in the Miniſters mouth. See Zach. 1.6. with the Notes.

Gen. 10.8.Ver. 15. It is a mighty Nation, it is an ancient Nation] As ancient as Nimrod the firſt founder of that firſt of the four Monarchies. Hence Babylon is called the land of Nimrod, Mic. 5. whom the Poets call Saturn, and his ſon and ſucceſſour Jupiter Belus.

A Nation whoſe language thou knoweſt not] For the Babylonians ſpake Syriack, Dan. 2.4. as did alſo the Jews afterwards, viz. after the captivity in Babylon, where they learnt it, and loſt their own language.