Exodus 9:4-13
English Standard Version
Chapter 9
4But the Lord will make a distinction between the livestock of Israel and the livestock of Egypt, so that nothing of all that belongs to the people of Israel shall die."’" 5And the Lord set a time, saying, "Tomorrow the Lord will do this thing in the land." 6And the next day the Lord did this thing. All the livestock of the Egyptians died, but not one of the livestock of the people of Israel died. 7And Pharaoh sent, and behold, not one of the livestock of Israel was dead. But the heart of Pharaoh was hardened, and he did not let the people go.
8And the Lord said to Moses and Aaron, "Take handfuls of soot from the kiln, and let Moses throw them in the air in the sight of Pharaoh.
9It shall become fine dust over all the land of Egypt, and become boils breaking out in sores on man and beast throughout all the land of Egypt."
10So they took soot from the kiln and stood before Pharaoh. And Moses threw it in the air, and it became boils breaking out in sores on man and beast.
11And the magicians could not stand before Moses because of the boils, for the boils came upon the magicians and upon all the Egyptians.
12But the Lord hardened the heart of Pharaoh, and he did not listen to them, as the Lord had spoken to Moses.