Sackcloth See also Darkness, Physical; Grieve; Humble; Remorse; Sorrow I make sackcloth covering of heavens, 2 Ne. 7:3 (Isa. 50:3). people must repent in sackcloth and ashes, Mosiah 11:25. Nephites repent and humble themselves in sackcloth, Hel. 11:9. the Lord covers heavens with sackcloth, D&C 133:69.