Cross reference
Exodus 7:13
13 But Pharaoh's heart was made hard, and he did not give ear to them, as the Lord had said.
Exodus 4:21
21 And the Lord said to Moses, When you go back to Egypt, see that you do before Pharaoh all the wonders which I have given you power to do: but I will make his heart hard and he will not let the people go.
Exodus 10:27
27 But the Lord made Pharaoh's heart hard, and he would not let them go.
Exodus 10:20
20 But the Lord made Pharaoh's heart hard, and he did not let the children of Israel go.
Exodus 10:1
1 And the Lord said to Moses, Go in to Pharaoh: for I have made his heart and the hearts of his servants hard, so that I may let my signs be seen among them:
Exodus 8:15
15 But when Pharaoh saw that there was peace for a time, he made his heart hard and did not give ear to them, as the Lord had said.
Hebrews 3:13
13 But give comfort to one another every day as long as it is still Today; so that no one among you may be made hard by the deceit of sin:
Hebrews 3:7-8
7 And so, as the Holy Spirit says, Today if you let his voice come to your ears,
8 Be not hard of heart, as when you made me angry, on the day of testing in the waste land,
Romans 2:5
5 But by your hard and unchanged heart you are storing up wrath for yourself in the day of the revelation of God's judging in righteousness;
Romans 1:28
28 And because they had not the mind to keep God in their knowledge, God gave them up to an evil mind, to do those things which are not right;
Zechariah 7:11-12
11 But they would not give attention, turning their backs and stopping their ears from hearing;
12 And they made their hearts like the hardest stone, so that they might not give ear to the law and the words which the Lord of armies had said by the earlier prophets: and there came great wrath from the Lord of armies.
Deuteronomy 2:30
30 But Sihon, king of Heshbon, would not let us go through; for the Lord your God made his spirit hard and his heart strong, so that he might give him up into your hands as at this day.
Exodus 14:17
17 And I will make the heart of the Egyptians hard, and they will go in after them: and I will be honoured over Pharaoh and over his army, his war-carriages, and his horsemen.
Exodus 7:3-4
3 And I will make Pharaoh's heart hard, and my signs and wonders will be increased in the land of Egypt.
4 But Pharaoh will not give ear to you, and I will put my hand on Egypt, and take my armies, my people, the children of Israel, out of Egypt, after great punishments.