Exodus 9:8-17

8Then the Lord said to Moses and Aaron, “Take handfuls of soot from a furnace, and have Moses throw it into the air while Pharaoh is watching.

9It will become fine dust over the whole land of Egypt and will cause boils to break out and fester on both people and animals in all the land of Egypt.”

10So they took soot from a furnace and stood before Pharaoh, Moses threw it into the air, and it caused festering boils to break out on both people and animals.

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

12But the Lord hardened Pharaoh’s heart, and he did not listen to them, just as the Lord had predicted to Moses.

13The Lord said to Moses, “Get up early in the morning, stand before Pharaoh, and tell him, ‘Thus says the Lord, the God of the Hebrews: “Release my people so that they may serve me!

14For this time I will send all my plagues on your very self and on your servants and your people, so that 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 plague, and you would have been destroyed from the earth.

16But for this purpose I have caused you to stand: to show you my strength, and so that my name may be declared in all the earth.

17You are still exalting yourself against my people by not releasing them.