Exodus 9:10-12

Modern English Version

¹⁰ So they took the ashes from a kiln and stood before Pharaoh. Then Moses tossed it up toward the heavens, and it became a boil breaking forth with blisters upon man and beast. ¹¹ The magicians could not stand before Moses because of the boils, for the boils were upon the magicians and upon all the Egyptians. ¹² Moreover, the Lord hardened the heart of Pharaoh, so that he did not listen to them, just as the Lord had spoken to Moses.