Exodus 9:8-12
The Plague of Boils
8Then Yahweh said to Moses and Aaron, “Take for yourselves handfuls of soot from a kiln, and let Moses toss it toward the sky in the sight of Pharaoh. 9“And it will become fine dust over all the land of Egypt, and it will become aboils breaking out with sores on man and beast through all the land of Egypt.” 10So they took the soot from the kiln and stood before Pharaoh; and Moses tossed it toward the sky, and it became boils breaking out with sores on man and beast. 11aAnd the 1magicians could not stand before Moses because of the boils, for the boils were on the magicians 2as well as on all the Egyptians. 12And aYahweh 1hardened Pharaoh’s heart with strength, and he did not listen to them, just as Yahweh had spoken to Moses.