Exodus 9:10

⁸And the Lord spoke to Moses and Aaron, saying, Take you handfuls of ashes of the furnace, and let Moses scatter it toward heaven before Pharaoh, and before his servants.

⁹And let it become dust over all the land of Egypt, and there shall be upon men and upon beasts sore blains breaking forth both on men and on beasts, in all the land of Egypt.

— Exodus 9:10 —

¹¹And the sorcerers could not stand before Moses because of the sores, for the sores were on the sorcerers, and in all the land of Egypt.

¹²And the Lord hardened Pharaoh’s heart, and he hearkened not to them, as the Lord appointed.