Exodus 9:10-12

Living Bible

¹⁰ So they took ashes from the kiln and went to Pharaoh; as he watched, Moses tossed them toward the sky, and they became boils that broke out on men and animals alike throughout all Egypt. ¹¹ And the magicians couldn’t stand before Moses because of the boils, for the boils appeared upon them too. ¹² But Jehovah hardened Pharaoh in his stubbornness, so that he refused to listen, just as the Lord had predicted to Moses.