Exodus 8:15

But when Pharaoh saw that there was [temporary] relief, he hardened his heart and would not listen or pay attention to them, just as the Lord had said.

Exodus 7:4

But Pharaoh will not listen to you, and I shall lay My hand on Egypt and bring out My hosts [like a defensive army, tribe by tribe], My people the children of Israel, out of the land of Egypt by great acts of judgment (the plagues).

Ecclesiastes 8:11

Because the sentence against an evil act is not executed quickly, the hearts of the sons of men are fully set to do evil.

Exodus 4:21

The Lord said to Moses, “When you return to Egypt, see that you perform before Pharaoh all the wonders (miracles) which I have put in your hand, but I will harden his heart and make him stubborn so that he will not let the people go.

Exodus 7:13-14

Yet Pharaoh’s heart was hardened and he would not listen to them, just as the Lord had said.

Exodus 14:5

When the king of Egypt was told that the people had fled, Pharaoh and his servants had a change of heart toward the people, and they said, “What is this that we have done? We have let Israel go from serving us!”

Proverbs 29:1

He who hardens his neck and refuses instruction after being often reproved (corrected, criticized),
Will suddenly be broken beyond repair.

Isaiah 26:10


Though the wicked is shown compassion and favor,
He does not learn righteousness;
In the land of uprightness he deals unjustly,
And refuses to see the majesty of the Lord.

Jeremiah 34:7-11

when the army of the king of Babylon was fighting against Jerusalem and against all the remaining cities of Judah, against Lachish and Azekah, for these were the [only] fortified cities among the cities of Judah.

Hosea 6:4


O Ephraim, what shall I do with you?
O Judah, what shall I do with you?
For your [wavering] loyalty and kindness are [transient] like the morning cloud
And like the dew that goes away early.

Zechariah 7:11-12

But they refused to listen and pay attention and turned a stubborn shoulder [stiffening themselves in resistance] and stopped up their ears.

Hebrews 3:8


Do not harden your hearts as [your fathers did] in the rebellion [of Israel at Meribah],
On the day of testing in the wilderness,

Hebrews 3:15

while it is said,

Today [while there is still opportunity] if you hear His voice,
Do not harden your heart, as when they provoked Me [in the rebellion in the desert at Meribah].”

Revelation 16:9

People were [severely] burned by the great heat; and they reviled the name of God who has power over these plagues, but they did not repent [of their sin] and glorify Him.

Treasury of Scripture Knowledge

Summary

But when Pharaoh saw that there was respite, he hardened his heart, and hearkened not unto them; as the LORD had said.

Bible References

He hardened

Exodus 4:21
The Lord said to Moses, “When you return to Egypt, see that you perform before Pharaoh all the wonders (miracles) which I have put in your hand, but I will harden his heart and make him stubborn so that he will not let the people go.
Exodus 7:4
But Pharaoh will not listen to you, and I shall lay My hand on Egypt and bring out My hosts [like a defensive army, tribe by tribe], My people the children of Israel, out of the land of Egypt by great acts of judgment (the plagues).
Proverbs 29:1
He who hardens his neck and refuses instruction after being often reproved (corrected, criticized),
Will suddenly be broken beyond repair.
Zechariah 7:11
But they refused to listen and pay attention and turned a stubborn shoulder [stiffening themselves in resistance] and stopped up their ears.
Hebrews 3:8

Do not harden your hearts as [your fathers did] in the rebellion [of Israel at Meribah],
On the day of testing in the wilderness,
Revelation 16:9
People were [severely] burned by the great heat; and they reviled the name of God who has power over these plagues, but they did not repent [of their sin] and glorify Him.

General references

Exodus 7:13
Yet Pharaoh’s heart was hardened and he would not listen to them, just as the Lord had said.
Exodus 8:32
But Pharaoh hardened his heart this time also, and he did not let the people go.
Jeremiah 34:11
But afterward they backed out [of the covenant] and made the male servants and the female servants whom they had set free return [to them], and brought the male servants and the female servants again into servitude.