Exodus 9:8-17

8So the Lord said to Moses and Aaron, “Take for yourselves handfuls of ashes from a furnace, and let Moses scatter it toward the heavens in the sight of Pharaoh.

9And it will become fine dust in all the land of Egypt, and it will cause boils that break out in sores on man and beast throughout all the land of Egypt.”

10Then they took ashes from the furnace and stood before Pharaoh, and Moses scattered them toward heaven. And they caused boils that break out in sores on man and beast.

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

12But the Lord hardened the heart of Pharaoh; and he did not heed them, just as the Lord had spoken to Moses.

13Then the Lord said to Moses, “Rise early in the morning and stand before Pharaoh, and say to him, ‘Thus says the Lord God of the Hebrews: “Let My people go, that they may serve Me,

14for at this time I will send all My plagues to your very heart, and on your servants and on your people, that you may know that there is none like Me in all the earth.

15Now if I had stretched out My hand and struck you and your people with pestilence, then you would have been cut off from the earth.

16But indeed for this purpose I have raised you up, that I may show My power in you, and that My name may be declared in all the earth.

17As yet you exalt yourself against My people in that you will not let them go.