Their drink is sour - metaphor for utter degeneracy of principle (Isa 1:22). Or, unbridled licentiousness; not mere ordinary sin, but as abandoned as drunkards who vomit and smell sour with wine potations [Calvin]. Maurer not so well translates, “When their drinking is over, they commit whoredoms,” namely, in honor of Astarte (Hos 4:13, Hos 4:14).
her rulers - Israel’s; literally, “shields” (compare Psa 47:9).
with shame ... love, Give ye - (Pro 30:15). No remedy could be effectual against their corruptions since the very rulers sold justice for gifts [Calvin]. Maurer translates, “The rulers are marvelously enamored of shame.” English Version is better.