John Calvin Commentary Isaiah 32:11

"Tremble, ye women that are at ease; be troubled, ye careless ones; strip you, and make you bare, and gird [sackcloth] upon your loins." — Isaiah 32:11 (ASV)

Tremble. This repetition is not unnecessary but states more fully what he previously said; for when people are asleep, they are not easily aroused by the voice of the prophets, and therefore it is necessary to cry aloud and reprove them continually. And thus, by adding one threat to another, or by repeating the same threats, he shows how great is the stupidity of people when they have once been blinded by prosperity, for they can hardly endure any longer to hear the warnings that God addresses to them.

People are undoubtedly more in danger from prosperity than from adversity. For when things go smoothly for them, they flatter themselves and are intoxicated by their success. Therefore, it was necessary to deal more sharply with the Jews to shake off that slothfulness.

This exhortation of the Prophet should be explained in the future tense, as if he had said, “You will eventually tremble, for the rest that you now enjoy will not be perpetual.”

By bidding them make themselves bare, and gird sackcloth on their loins, he describes the manner and dress of mourners. Whenever they experienced deep adversity, they put on sackcloth, uncovered the other parts of their body, and by dress, attitude, and every method, showed their grief. He desires women to put on sackcloth and other expressions of mourning, instead of the luxuries and pleasures in which they eagerly indulged.