Vous avez cherché: sackcloth (Anglais - Swahili)

and i will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth.
nami nitawatuma mashahidi wangu wawili ili watangaze ujumbe wa mungu kwa muda huo wa siku elfu moja mia mbili na sitini wakiwa wamevaa mavazi ya magunia."

and i beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;
kisha nikatazama, na wakati mwanakondoo alipouvunja mhuri wa sita, kukawa na tetemeko kubwa la ardhi; jua likawa jeusi kama gunia; mwezi wote ukawa mwekundu kama damu;

woe unto thee, chorazin! woe unto thee, bethsaida! for if the mighty works had been done in tyre and sidon, which have been done in you, they had a great while ago repented, sitting in sackcloth and ashes.
"ole wako korazini! ole wako bethsaida! maana, kama miujiza iliyofanyika kwenu ingalifanyika kule tiro na sidoni, watu wake wangalikwishavaa mavazi ya gunia kitambo, na kukaa katika majivu kuonyesha kwamba wametubu.