Exo_4:21 The LORD said to Moses, "When you return to Egypt, see that you perform before Pharaoh all the wonders I have given you the power to do. But I will harden his heart so that he will not let the people go.
Exo_7:3 But I will harden Pharaoh's heart, and though I multiply my signs and wonders in Egypt,
Exo_14:4 And I will harden Pharaoh's heart, and he will pursue them. But I will gain glory for myself through Pharaoh and all his army, and the Egyptians will know that I am the LORD." So the Israelites did this.
Exo_14:17 I will harden the hearts of the Egyptians so that they will go in after them. And I will gain glory through Pharaoh and all his army, through his chariots and his horsemen.
1Sa_6:6 Why do you harden your hearts as the Egyptians and Pharaoh did? When Israel's god dealt harshly with them, did they not send the Israelites out so they could go on their way?
Psa_95:8 "Do not harden your hearts as you did at Meribah, as you did that day at Massah in the wilderness,
Isa_63:17 Why, LORD, do you make us wander from your ways and harden our hearts so we do not revere you? Return for the sake of your servants, the tribes that are your inheritance.
Rom_9:18 Therefore God has mercy on whom he wants to have mercy, and he hardens whom he wants to harden.
Heb_3:8 do not harden your hearts as you did in the rebellion, during the time of testing in the wilderness,
Heb_3:15 As has just been said: "Today, if you hear his voice, do not harden your hearts as you did in the rebellion."
Heb_4:7 God again set a certain day, calling it "Today." This he did when a long time later he spoke through David, as in the passage already quoted: "Today, if you hear his voice, do not harden your hearts."