The ashes will spread like dust through all the land of Egypt. They will cause boils to break out and become sores on the skin of people and animals everywhere in the land.”
So Moses and Aaron took ashes from a furnace and went and stood before the king. Moses threw ashes into the air, which caused boils to break out and become sores on people and animals.
The first angel left and poured out his bowl on the land. Then ugly and painful sores came upon all those who had the mark of the beast and who worshiped his idol.