Exodus 8:7-8:18

"The frogs shall retreat from you and your courtiers and your people; they shall remain only in the Nile." Then Moses and Aaron left Pharaoh's presence, and Moses cried out to the Lord in the matter of the frogs which He had inflicted upon Pharaoh. And the Lord did as Moses asked; the frogs died out in the houses, the courtyards, and the fields. And they piled them up in heaps, till the land stank. But when Pharaoh saw that there was relief, he became stubborn and would not heed them, as the Lord had spoken. Then the Lord said to Moses, "Say to Aaron: Hold out your rod and strike the dust of the earth, and it shall turn to lice throughout the land of Egypt." And they did so. Aaron held out his arm with the rod and struck the dust of the earth, and vermin came upon man and beast; all the dust of the earth turned to lice throughout the land of Egypt. The magicians did the like with their spells to produce lice, but they could not. The vermin remained upon man and beast; and the magicians said to Pharaoh, "This is the finger of God!" But Pharaoh's heart stiffened and he would not heed them, as the Lord had spoken. And the Lord said to Moses, "Early in the morning present yourself to Pharaoh, as he is coming out to the water, and say to him, 'Thus says the Lord: Let My people go that they may worship Me. For if you do not let My people go, I will let loose swarms of insects against you and your courtiers and your people and your houses; the houses of the Egyptians, and the very ground they stand on, shall be filled with swarms of insects. But on that day I will set apart the region of Goshen, where My people dwell, so that no swarms of insects shall be there, that you may know that I the Lord am in the midst of the land.'"