…
9 “When Pharaoh says to you, ‘Prove yourselves by working a miracle,’ then you shall say to Aaron, ‘Take your rod and cast it down before Pharaoh, that it may become a serpent.’” 10 So Moses and Aaron went to Pharaoh and did as the LORD commanded; Aaron cast down his rod before Pharaoh and his servants, and it became a serpent. 11 Then Pharaoh summoned the wise men and the sorcerers; and they also, the magicians of Egypt, did the same by their secret arts. 12 For every man cast down his rod, and they became serpents. But Aaron’s rod swallowed up their rods.
…
20 Moses and Aaron did as the LORD commanded; in the sight of Pharaoh and in the sight of his servants, he lifted up the rod and struck the water that was in the Nile, and all the water that was in the Nile turned to blood. 21 And the fish in the Nile died; and the Nile became foul, so that the Egyptians could not drink water from the Nile; and there was blood throughout all the land of Egypt. 22 But the magicians of Egypt did the same by their secret arts; so Pharaoh’s heart remained hardened, and he would not listen to them;
…
6 So Aaron stretched out his hand over the waters of Egypt; and the frogs came up and covered the land of Egypt. 7 But the magicians did the same by their secret arts, and brought frogs upon the land of Egypt.
…
17 And they did so; Aaron stretched out his hand with his rod, and struck the dust of the earth, and there came gnats on man and beast; all the dust of the earth became gnats throughout all the land of Egypt. 18 The magicians tried by their secret arts to bring forth gnats, but they could not. So there were gnats on man and beast. 19 And the magicians said to Pharaoh, “This is the finger of God.”
…