Deuteronomy 2:30

But Sihon king of Heshbon would not let us pass by him. For Jehovah your God hardened his spirit and made his heart stubborn so that He might deliver him into your hand, as it is this day.

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.

Numbers 21:23

And Sihon would not allow Israel to pass through his border. But Sihon gathered all his people, and went out against Israel in the wilderness. And he came to Jahaz and fought against Israel.

Exodus 11:10

And Moses and Aaron did all these wonders before Pharaoh. And Jehovah hardened Pharaoh's heart so that he would not let the sons of Israel go out of his land.

Joshua 11:19-20

There was not a city that made peace with the sons of Israel, except the Hivites, the inhabitants of Gibeon. All others they took in battle.

Judges 11:20

But Sihon did not trust Israel to pass through his border. But Sihon gathered all his people together and pitched in Jahaz, and fought against Israel.

Isaiah 48:4

Because I knew that you are obstinate, and your neck is an iron sinew and your brow bronze.

Romans 9:17-23

For the Scripture says to Pharaoh, "Even for this same purpose I have raised you up, that I might show My power in you, and that My name might be declared throughout all the earth."

Treasury of Scripture Knowledge

Summary

But Sihon king of Heshbon would not let us pass by him: for the LORD thy God hardened his spirit, and made his heart obstinate, that he might deliver him into thy hand, as appeareth this day.

Obstinate

Bible References

For the lord

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 11:10
And Moses and Aaron did all these wonders before Pharaoh. And Jehovah hardened Pharaoh's heart so that he would not let the sons of Israel go out of his land.
Numbers 21:23
And Sihon would not allow Israel to pass through his border. But Sihon gathered all his people, and went out against Israel in the wilderness. And he came to Jahaz and fought against Israel.
Joshua 11:19
There was not a city that made peace with the sons of Israel, except the Hivites, the inhabitants of Gibeon. All others they took in battle.
Judges 11:20
But Sihon did not trust Israel to pass through his border. But Sihon gathered all his people together and pitched in Jahaz, and fought against Israel.
Romans 9:17
For the Scripture says to Pharaoh, "Even for this same purpose I have raised you up, that I might show My power in you, and that My name might be declared throughout all the earth."

Obstinate

Isaiah 48:4
Because I knew that you are obstinate, and your neck is an iron sinew and your brow bronze.

General references

Exodus 7:13
And He hardened Pharaoh's heart so that he did not listen to them, as Jehovah had said.
Exodus 10:20
But Jehovah hardened Pharaoh's heart, and he did not let the sons of Israel go.
Deuteronomy 29:4
Yet Jehovah has not given you a heart to perceive, and eyes to see, and ears to hear, until today.
Job 39:17
because God has caused her to forget wisdom, and He has not given her a share in understanding.