Exodus 9:10-12

New Living Translation

¹⁰ So they took soot from a brick kiln and went and stood before Pharaoh. As Pharaoh watched, Moses threw the soot into the air, and boils broke out on people and animals alike. ¹¹ Even the magicians were unable to stand before Moses, because the boils had broken out on them and all the Egyptians. ¹² But the Lord hardened Pharaoh’s heart, and just as the Lord had predicted to Moses, Pharaoh refused to listen.