Bible Verses About Sackcloth: By God's prophets

They answered him, “He was a hairy man, and wearing a leather belt around his waist.” He said, “It is Elijah the Tishbite.”

at that time the LORD spoke by Isaiah the son of Amoz, saying, “Go, and loosen the sackcloth from off your waist, and take your shoes from off your feet.” He did so, walking naked and barefoot.

Now Yochanan himself wore clothing made of camel’s hair, with a leather belt around his waist. His food was locusts and wild honey.

I will give power to my two witnesses, and they will prophesy one thousand two hundred sixty days, clothed in sackcloth.”