Exodus 7:4

“So I will stretch out My hand and strike Egypt with all My wondrous deeds which I shall do in the midst of it; and after that he will let you go.

Then Yahweh said to Moses, “Now you shall see what I will do to Pharaoh; for by a strong hand he will let them go, and by a strong hand he will drive them out of his land.”

“Say, therefore, to the sons of Israel, ‘I am Yahweh, and I will bring you out from under the hard labors of the Egyptians, and I will deliver you from their slavery. I will also redeem you with an outstretched arm and with great judgments.

It was the same Aaron and Moses to whom Yahweh said, “Bring out the sons of Israel from the land of Egypt according to their hosts.”

Then Pharaoh saw that there was relief, and he hardened his heart with firmness and did not listen to them, as Yahweh had spoken.

behold, the hand of Yahweh will come with a very heavy pestilence on your livestock which are in the field, on the horses, on the donkeys, on the camels, on the herds, and on the flocks.

Then Yahweh said to Moses, “Pharaoh will not listen to you, so that My miraculous wonders will be multiplied in the land of Egypt.”

And Moses recounted to his father-in-law all that Yahweh had done to Pharaoh and to the Egyptians for Israel’s sake, all the hardship that had befallen them on the journey, and how Yahweh had delivered them.