Exodus 7:4
Pharaoh will not listen to you. Then I will lay My hand on Egypt, and by mighty acts of judgment I will bring the divisions of My people the Israelites out of the land of Egypt.

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 8:15
When Pharaoh saw there was relief, however, he hardened his heart and would not listen to Moses and Aaron, just as the LORD had said.

Exodus 10:1, 20, 27
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 14:17
And I will harden the hearts of the Egyptians so that they will go in after them. Then I will gain honor by means of Pharaoh and all his army and chariots and horsemen.

Deuteronomy 2:30
But Sihon king of Heshbon would not let us pass through, for the LORD your God had made his spirit stubborn and his heart obstinate, that He might give him into your hands, as is the case this day.

Zechariah 7:11, 12
But they refused to pay attention and turned a stubborn shoulder; they stopped up their ears from hearing. . . .

Romans 1:28
Furthermore, since they did not see fit to acknowledge God, He gave them up to a depraved mind, to do what ought not to be done.

Romans 2:5
But because of your hard and unrepentant heart, you are storing up wrath against yourself for the day of wrath, when God's righteous judgment will be revealed.

Hebrews 3:7, 8, 13
Therefore, as the Holy Spirit says: "Today if you hear His voice, . . .