Isaiah 19:14 - Matthew Poole's English Annotations on the Holy Bible

Hath mingled; or, hath poured out or given them to drink as appears from their drunkenness, expressed in the end of the verse; which also suits with the Scripture phrase whereby a cup signifies God's judgments, as Isaiah 51:17,21 22 Jer 25:15. A perverse spirit, Heb. a spirit of perversities or crookednesses; or, as the LXX. and Chaldee render it, of error or delusion; a disposition of mind very apt to mistake, and to mislead them into foolish and crooked counsels and courses; which God could easily effect, partly by laying occasions of stumbling in their way, and partly by withdrawing or darkening that wisdom which he had infused, by which alone men can discern their way. In every work thereof; in all their designs and undertakings. Staggereth in his vomit; when he is so excessively drunk, that he reels to and fro, and vomits up his drink.