Isaiah 20:2-4

Then the LORD spoke through Isaiah son of Amoz, saying, “Take the rough cloth off your body, and take your sandals off your feet.” So Isaiah obeyed and walked around naked and barefoot. Then the LORD said, “Isaiah my servant has walked around naked and barefoot for three years as a sign against Egypt and Cush. The king of Assyria will carry away prisoners from Egypt and Cush. Old people and young people will be led away naked and barefoot, with their buttocks bare. So the Egyptians will be shamed.