Exodus 10:1, 20
Then the LORD said to Moses, "Go to Pharaoh, for I have hardened his heart and the hearts of his officials, that I may perform these miraculous signs of Mine among them, . . .

Exodus 4:21
The LORD instructed Moses, "When you go back to Egypt, see that you perform before Pharaoh all the wonders that I have put within your power. But I will harden his heart so that he will not let the people go.

Exodus 14:4, 8
And I will harden Pharaoh's heart so that he will pursue them. But I will gain honor by means of Pharaoh and all his army, and the Egyptians will know that I am the LORD." So this is what the Israelites did. . . .

Revelation 9:20
The rest of mankind who were not killed by these plagues still did not repent of the works of their hands. They did not stop worshiping demons and idols of gold, silver, bronze, stone, and wood, which cannot see or hear or walk.

Revelation 16:10, 11
And the fifth angel poured out his bowl on the throne of the beast, and its kingdom was plunged into darkness, and men began to gnaw their tongues in anguish . . .