Exodus 9:8 - 9:12
The Plague of Boils
8 Then 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 boils breaking out with sores on man and beast through all the land of Egypt.” 10 So 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. 11 And the magicians could not stand before Moses because of the boils, for the boils were on the magicians as well as on all the Egyptians. 12 And Yahweh hardened Pharaoh’s heart with strength, and he did not listen to them, just as Yahweh had spoken to Moses.