Exodus 9:8-17

8Then the Lord said to Moses and Aaron, “Take handfuls of soot from a furnace and have Moses toss it into the air in the presence of Pharaoh.

9It will become fine dust over the whole land of Egypt, and festering boils will break out on people and animals throughout the land.”

10So they took soot from a furnace and stood before Pharaoh. Moses tossed it into the air, and festering boils broke out on people and animals.

11The magicians could not stand before Moses because of the boils that were on them and on all the Egyptians.

12But the Lord hardened Pharaoh’s heart and he would not listen to Moses and Aaron, just as the Lord had said to Moses.

13Then the Lord said to Moses, “Get up early in the morning, confront Pharaoh and say to him, ‘This is what the Lord, the God of the Hebrews, says: Let my people go, so that they may worship me,

14or this time I will send the full force of my plagues against you and against your officials and your people, so you may know that there is no one like me in all the earth.

15For by now I could have stretched out my hand and struck you and your people with a plague that would have wiped you off the earth.

16But I have raised you up for this very purpose, that I might show you my power and that my name might be proclaimed in all the earth.

17You still set yourself against my people and will not let them go.