Amos 4:8 - Matthew Poole's English Annotations on the Holy Bible

Two or three, a certain for an uncertain number, cities, the places for the inhabitants, by a usual metonymy, wandered unto one city to drink water: it seems to imply that they travelled at some uncertainty, as they do who wander and rove about. It is not unlikely but that in the prophet's times the story might be well known and fresh in memory, though here no mention is made of these cities. But they were not satisfied; either that city they went to had not enough for them, or durst not part with it; or, though they quenched their thirst, yet because they must return back to their own dry and waterless cities, or because God withdrew his blessing, they were never the better, or else not much or long the better. Yet have ye not returned unto me: see Amos 4:6.