Exodus 7:5

“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.”

‘Thus says Yahweh, “By this you shall know that I am Yahweh: behold, I am about to strike the water that is in the Nile with the staff that is in my hand, and it will be turned to blood.

And the magicians said to Pharaoh, “This is the finger of God.” But Pharaoh’s heart was hardened with strength, and he did not listen to them, as Yahweh had spoken.

and that you may recount in the hearing of your son and of your grandson, how I dealt severely with the Egyptians, and how I put My signs among them, that you may know that I am Yahweh.”

And Pharaoh’s servants said to him, “How long will this man be a snare to us? Let the men go, that they may serve Yahweh their God. Do you not yet know that Egypt is destroyed?”

“Thus I will harden Pharaoh’s heart with strength, and he will pursue them; and I will be glorified through Pharaoh and all his army, so that the Egyptians will know that I am Yahweh.” And they did so.

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.

Yahweh has made Himself known; He has executed judgment. In the work of his own hands the wicked is snared. Higgaion Selah.

Though I walk in the midst of distress, You will revive me; You will stretch forth Your hand against the wrath of my enemies, And Your right hand will save me.

“When I make the land of Egypt a desolation, And the land is desolate of its fullness, When I strike all those who inhabit it, Then they shall know that I am Yahweh.