Exodus 10:20

And Yahweh said to Moses, “When you go to return to Egypt, see to it that all the miraculous wonders which I have put in your hand, that you do them before Pharaoh; but as for Me, I will harden his heart with strength so that he will not let the people go.

Yet Pharaoh’s heart was hardened with strength, and he did not listen to them, as Yahweh had spoken.

And Yahweh hardened Pharaoh’s heart with strength, and he did not listen to them, just as Yahweh had spoken to Moses.

But Yahweh hardened Pharaoh’s heart with strength, and he was not willing to let them go.

Now Moses and Aaron did all these miraculous wonders before Pharaoh; yet Yahweh hardened Pharaoh’s heart with strength, and he did not let the sons of Israel go out of his land.

“Then You performed signs and wonders against Pharaoh, Against all his servants and all the people of his land; For You knew that they acted presumptuously toward them, And made a name for Yourself as it is this day.

So then He has mercy on whom He desires, and He hardens whom He desires.