"'And I will make a distinction between My people and your people. Tomorrow this sign shall come to pass.'" And the Lord did so. Heavy swarms of insects invaded Pharaoh's palace and the houses of his courtiers; throughout the country of Egypt the land was ruined because of the swarms of insects.
Then Pharaoh summoned Moses and Aaron and said, "Go and sacrifice to your God within the land." But Moses replied, "It would not be right to do this, for what we sacrifice to the Lord our God is untouchable to the Egyptians. If we sacrifice that which is untouchable to the Egyptians before their very eyes, will they not stone us! So we must go a distance of three days into the wilderness and sacrifice to the Lord our God as He may command us." Pharaoh said, "I will let you go to sacrifice to the Lord your God in the wilderness; but do not go very far. Plead, then, for me." And Moses said, "When I leave your presence, I will plead with the Lord that the swarms of insects depart tomorrow from Pharaoh and his courtiers and his people; but let not Pharaoh again act deceitfully, not letting the people go to sacrifice to the Lord."
So Moses left Pharaoh's presence and pleaded with the Lord. And the Lord did as Moses asked: He removed the swarms of insects from Pharaoh, from his courtiers, and from his people; not one remained. But Pharaoh became stubborn this time also, and would not let the people go.
The Lord said to Moses, "Go to Pharaoh and say to him, 'Thus says the Lord, the God of the Hebrews: Let My people go to worship Me. For if you refuse to let them go, and continue to hold them, then the hand of the Lord will strike your livestock in the fields--the horses, the asses, the camels, the cattle, and the sheep--with a very severe pestilence. But the Lord will make a distinction between the livestock of Israel and the livestock of the Egyptians, so that nothing shall die of all that belongs to the Israelites. The Lord has fixed the time: tomorrow the Lord will do this thing in the land.'" And the Lord did so the next day: all the livestock of the Egyptians died, but of the livestock of the Israelites not a beast died. When Pharaoh inquired, he found that not a head of the livestock of Israel had died; yet Pharaoh remained stubborn, and he would not let the people go.
Then the Lord said to Moses and Aaron, "Each of you take handfuls of soot from the kiln, and let Moses throw it toward the sky in the sight of Pharaoh. It shall become a fine dust all over the land of Egypt, and cause an inflammation breaking out in boils on man and beast throughout the land of Egypt." So they took soot of the kiln and appeared before Pharaoh; Moses threw it toward the sky, and it caused an inflammation breaking out in boils on man and beast. The magicians were unable to confront Moses because of the inflammation, for the inflammation afflicted the magicians as well as all the other Egyptians. But the Lord stiffened the heart of Pharaoh, and he would not heed them, just as the Lord had told Moses.
The Lord said to Moses, "Early in the morning present yourself to Pharaoh and say to him, 'Thus says the Lord, the God of the Hebrews: Let My people go to worship Me. For this time I will send all My plagues upon your person, and your courtiers, and your people, in order that you may know that there is none like Me in all the world. I could have stretched forth My hand and stricken you and your people with pestilence, and you would have been effaced from the earth. Nevertheless I have spared you for this purpose: in order to show you My power, and in order that My fame may resound throughout the world.'"