John Gill's Exposition of the Whole Bible
Isaiah 15:3
In their streets they shall girt themselves with sackcloth,.... Instead of their fine clothes, with which they had used to deck themselves, being a very proud people; see Isaiah 16:6 this was usual in times of distress on any account, as well as a token of mourning for the dead; see Joel 1:8. The word for "streets" might be rendered "villages", as distinct from cities, that were "without" the walls of the cities, though adjacent to them; and the rather, seeing mention is made of streets afterwards:
on the tops of their houses; which were made flat, as the houses of the Jews were, on which were battlements, Deuteronomy 22:8 hither they went for safety from their enemies, or to see if they could spy the enemy, or any that could assist them, and deliver them; or rather, hither they went for devotion, to pray to their gods for help; for here it was usual to have altars erected, to burn incense on to their deities; see
2 Kings 23:12 and in such places the people of God were wont to pray, Acts 10:9:
and in their streets; publicly, as well as privately, where they ran up and down to get from the enemy, and save themselves:
everyone shall howl, weeping abundantly: or, "descending with weeping": the tears running down his cheeks in great abundance, so that his whole body was as it were watered with them; or the meaning may be, that everyone that went up to the temples of the idols, and to the high places, Isaiah 15:2 or to the roofs of the houses, as here, to pray the assistance of their gods, should come down weeping and howling, having no success.