Exodus 9:7

Pharaoh sent, and behold, there was not even one of the livestock of Israel dead. But the heart of Pharaoh was hardened, and he did not let the people go.

Exodus 7:14

Then the Lord said to Moses, “Pharaoh’s heart is stubborn; he refuses to let the people go.

Exodus 8:32

But Pharaoh hardened his heart this time also, and he did not let the people go.

Exodus 9:12

And the Lord hardened Pharaoh’s heart, and he did not listen to them, just as the Lord had spoken to Moses.

Job 9:4

Wise in heart and mighty in strength,
Who has defied Him without harm?

Proverbs 29:1

A man who hardens his neck after much reproof
Will suddenly be broken beyond remedy.

Isaiah 48:4

“Because I know that you are obstinate,
And your neck is an iron sinew
And your forehead bronze,

Daniel 5:20

But when his heart was lifted up and his spirit became so proud that he behaved arrogantly, he was deposed from his royal throne and his glory was taken away from him.

Romans 9:18

So then He has mercy on whom He desires, and He hardens whom He desires.

Treasury of Scripture Knowledge

Summary

And Pharaoh sent, and, behold, there was not one of the cattle of the Israelites dead. And the heart of Pharaoh was hardened, and he did not let the people go.

Bible References

The heart

Exodus 9:12
And the Lord hardened Pharaoh’s heart, and he did not listen to them, just as the Lord had spoken to Moses.
Exodus 7:14
Then the Lord said to Moses, “Pharaoh’s heart is stubborn; he refuses to let the people go.
Exodus 8:32
But Pharaoh hardened his heart this time also, and he did not let the people go.
Job 9:4
Wise in heart and mighty in strength,
Who has defied Him without harm?
Proverbs 29:1
A man who hardens his neck after much reproof
Will suddenly be broken beyond remedy.
Isaiah 48:4
“Because I know that you are obstinate,
And your neck is an iron sinew
And your forehead bronze,
Daniel 5:20
But when his heart was lifted up and his spirit became so proud that he behaved arrogantly, he was deposed from his royal throne and his glory was taken away from him.
Romans 9:18
So then He has mercy on whom He desires, and He hardens whom He desires.