Exodus 7:14

The 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 a respite, he hardened his heart, and did not listen to them, as the LORD had spoken.

Exodus 10:1

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

Exodus 10:27

But the LORD hardened Pharaoh's heart, and he wouldn't let them go.

Exodus 4:23

and I have said to you, "Let my son go, that he may serve me;" and you have refused to let him go. Behold, I will kill your son, your firstborn.'"

Exodus 8:2

If you refuse to let them go, behold, I will plague all your borders with frogs:

Exodus 9:2

For if you refuse to let them go, and hold them still,

Exodus 10:4

Or else, if you refuse to let my people go, behold, tomorrow I will bring locusts into your country,

Isaiah 1:20

but if you refuse and rebel, you shall be devoured with the sword; for the mouth of the LORD has spoken it."

Jeremiah 8:5

Why then is this people of Jerusalem slidden back by a perpetual backsliding? They hold fast deceit, they refuse to return.

Jeremiah 9:6

Your habitation is in the midst of deceit; through deceit they refuse to know me," says the LORD.

Zechariah 7:12

Yes, they made their hearts as hard as flint, lest they might hear the law, and the words which the LORD of hosts had sent by his Spirit by the former prophets. Therefore great wrath came from the LORD of hosts.

Hebrews 12:25

See that you do not refuse him who speaks. For if they did not escape when they refused him who warned on the earth, how much more will we not escape who turn away from him who warns from heaven,

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 a respite, he hardened his heart, and did not listen to them, as the LORD had spoken.
Exodus 10:1
The 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
Yes, they made their hearts as hard as flint, lest they might hear the law, and the words which the LORD of hosts had sent by his Spirit by the former prophets. Therefore great wrath came from the LORD of hosts.

He refuseth

Exodus 4:23
and I have said to you, "Let my son go, that he may serve me;" and you have refused to let him go. Behold, I will kill your son, your firstborn.'"
Exodus 8:2
If you refuse to let them go, behold, I will plague all your borders with frogs:
Exodus 9:2
For if you refuse to let them go, and hold them still,
Exodus 10:4
Or else, if you refuse to let my people go, behold, tomorrow I will bring locusts into your country,
Isaiah 1:20
but if you refuse and rebel, you shall be devoured with the sword; for the mouth of the LORD has spoken it."
Jeremiah 8:5
Why then is this people of Jerusalem slidden back by a perpetual backsliding? They hold fast deceit, they refuse to return.
Jeremiah 9:6
Your habitation is in the midst of deceit; through deceit they refuse to know me," says the LORD.
Hebrews 12:25
See that you do not refuse him who speaks. For if they did not escape when they refused him who warned on the earth, how much more will we not escape who turn away from him who warns from heaven,

General references

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