Commentary for Isaiah 50:3

I clothe the heavens The host of the heavens, the princes of the heathens (nations [Mss. and K’li Paz]), when I come to mete out retribution upon the nations.

מלבוש קדרׂות ═ קדרות With black cloth,²A. V., With blackness. See c. xlix. Note 23. that is, with clouds. Some understand it to refer to an eclipse of the sun, when the sky becomes obscure in the middle of the day, and appears as if covered with sackcloth, which is usually black.