Shall gird themselves with sackcloth: this was another practice of mourners. The tops of their houses, which were made flat, Deuteronomy 22:8; to which men used to go up, either to walk, or to cry to God in heaven or to men for help. In their streets; publicly, without shame; whereas in ordinary sorrows men are wont to seek secret places for their mourning.
Related Commentaries of Isaiah 15:3
Isaiah 15:3
3 In their streets they shall gird themselves with sackcloth: on the tops of their houses, and in their streets, every one shall howl, weepinga abundantly.