Exodus 8:32

And Pharaoh hardened his heart at this time also, neither would he let the people go.

Exodus 8:15

But Pharaoh saw that there was relief, and he hardened his heart, and did not listen to them, even as Jehovah had said.

Exodus 4:21

And Jehovah said to Moses, When you go to return into Egypt, see that you do all those wonders which I have put in your hand before Pharaoh; but I will harden his heart, that he shall not let the people go.

Exodus 7:13-14

And He hardened Pharaoh's heart so that he did not listen to them, as Jehovah had said.

Exodus 8:8

And Pharaoh called for Moses and Aaron, and said, Pray to Jehovah that He may take away the frogs from me and from my people. And I will let the people go, so that they may sacrifice to Jehovah.

Isaiah 63:17

O Jehovah, why have You made us wander from Your ways. You harden our heart from Your fear? For Your servants' sake, return the tribes of Your inheritance.

Acts 28:26-27

saying, "Go to this people and say: Hearing you shall hear and shall not understand; and seeing you shall see and not perceive.

Romans 2:5

But according to your hardness and your impenitent heart, do you treasure up wrath for yourself in a day of wrath and revelation of the righteous judgment of God,

James 1:13-14

Let no one being tempted say, I am tempted from God. For God is not tempted by evils, and He tempts no one.

Treasury of Scripture Knowledge

Summary

And Pharaoh hardened his heart at this time also, neither would he let the people go.

Bible References

General references

Exodus 8:15
But Pharaoh saw that there was relief, and he hardened his heart, and did not listen to them, even as Jehovah had said.
Exodus 4:21
And Jehovah said to Moses, When you go to return into Egypt, see that you do all those wonders which I have put in your hand before Pharaoh; but I will harden his heart, that he shall not let the people go.
Exodus 7:13
And He hardened Pharaoh's heart so that he did not listen to them, as Jehovah had said.
Isaiah 63:17
O Jehovah, why have You made us wander from Your ways. You harden our heart from Your fear? For Your servants' sake, return the tribes of Your inheritance.
Acts 28:26
saying, "Go to this people and say: Hearing you shall hear and shall not understand; and seeing you shall see and not perceive.
Romans 2:5
But according to your hardness and your impenitent heart, do you treasure up wrath for yourself in a day of wrath and revelation of the righteous judgment of God,
James 1:13
Let no one being tempted say, I am tempted from God. For God is not tempted by evils, and He tempts no one.