at that time the Lord spoke through Isaiah, son of Amoz. He told him, “Take off the sackcloth clothes from your body and remove your sandals.” Isaiah did so and went around naked and barefoot.
On that day such prophets will be too humiliated to prophesy their supposed visions. In order to deceive they will not put on their prophet's clothes made of coarse hair.
He will go ahead of the Lord in the spirit and power of Elijah, to turn the fathers back to thinking about their children, and to turn those who are rebellious back to a right understanding—to prepare a people ready for the Lord.”