Exodus 7:14

And LORD said to Moses, Pharaoh's heart is stubborn; he refuses to let the people go.

Exodus 8:15

But when Pharaoh saw that there was relief, he hardened his heart, and did not hearken to them, as LORD had spoken.

Exodus 10:1

And LORD said to Moses, Go in to Pharaoh, for I have hardened his heart, and the heart of his servants, that I may show these my signs in the midst of them,

Exodus 10:20

But LORD hardened Pharaoh's heart, and he did not let the sons of Israel go.

Exodus 10:27

But LORD hardened Pharaoh's heart, and he would not let them go.

Exodus 4:23

and I have said to thee, Let my son go, that he may serve me, and thou have refused to let him go. Behold, I will slay thy son, thy first-born.

Exodus 8:2

And if thou refuse to let them go, behold, I will smite all thy borders with frogs.

Exodus 9:2

For if thou refuse to let them go, and will still hold them,

Exodus 10:4

Else, if thou refuse to let my people go, behold, tomorrow I will bring locusts into thy border.

Isaiah 1:20

But if ye refuse and rebel, ye shall be devoured with the sword, for the mouth of LORD has spoken it.

Jeremiah 8:5

Why then has this people of Jerusalem slid back by a perpetual backsliding? They hold firm deceit. They refuse to return.

Jeremiah 9:6

Thy habitation is in the midst of deceit. Through deceit they refuse to know me, says LORD.

Zechariah 7:12

Yea, they made their hearts as an adamant stone, lest they should hear the law, and the words which LORD of hosts had sent by his Spirit by the former prophets. Therefore great wrath came from LORD of hosts.

Hebrews 12:25

Watch, that ye not refuse him who speaks. For if those men did not escape, having refused him who spoke a divine message on earth, much more we, those who turn away from him from the heavens,

Treasury of Scripture Knowledge

Summary

And the LORD said unto Moses, Pharaoh's heart is hardened, he refuseth to let the people go.

General references

Bible References

Pharaoh's

Exodus 8:15
But when Pharaoh saw that there was relief, he hardened his heart, and did not hearken to them, as LORD had spoken.
Exodus 10:1
And LORD said to Moses, Go in to Pharaoh, for I have hardened his heart, and the heart of his servants, that I may show these my signs in the midst of them,
Zechariah 7:12
Yea, they made their hearts as an adamant stone, lest they should hear the law, and the words which LORD of hosts had sent by his Spirit by the former prophets. Therefore great wrath came from LORD of hosts.

He refuseth

Exodus 4:23
and I have said to thee, Let my son go, that he may serve me, and thou have refused to let him go. Behold, I will slay thy son, thy first-born.
Exodus 8:2
And if thou refuse to let them go, behold, I will smite all thy borders with frogs.
Exodus 9:2
For if thou refuse to let them go, and will still hold them,
Exodus 10:4
Else, if thou refuse to let my people go, behold, tomorrow I will bring locusts into thy border.
Isaiah 1:20
But if ye refuse and rebel, ye shall be devoured with the sword, for the mouth of LORD has spoken it.
Jeremiah 8:5
Why then has this people of Jerusalem slid back by a perpetual backsliding? They hold firm deceit. They refuse to return.
Jeremiah 9:6
Thy habitation is in the midst of deceit. Through deceit they refuse to know me, says LORD.
Hebrews 12:25
Watch, that ye not refuse him who speaks. For if those men did not escape, having refused him who spoke a divine message on earth, much more we, those who turn away from him from the heavens,

General references

Exodus 8:32
And Pharaoh hardened his heart this time also, and he did not let the people go.
Exodus 9:12
And LORD hardened the heart of Pharaoh, and he did not hearken to them, as LORD had spoken to Moses.
Exodus 10:20
But LORD hardened Pharaoh's heart, and he did not let the sons of Israel go.