Deuteronomy 2:30

But Sihon king of Heshbon was not willing for us to pass through his land; for the Lord your God hardened his spirit and made his heart obstinate, in order to deliver him into your hand, as he is today.

Exodus 4:21

The Lord said to Moses, “When you go back to Egypt see that you perform before Pharaoh all the wonders which I have put in your power; but I will harden his heart so that he will not let the people go.

Numbers 21:23

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

Exodus 11:10

Moses and Aaron performed all these wonders before Pharaoh; yet the Lord hardened Pharaoh’s heart, and he did not let the sons of Israel go out of his land.

Joshua 11:19-20

There was not a city which made peace with the sons of Israel except the Hivites living in Gibeon; they took them all in battle.

Judges 11:20

But Sihon did not trust Israel to pass through his territory; so Sihon gathered all his people and camped in Jahaz and fought with Israel.

Isaiah 48:4

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

Romans 9:17-23

For the Scripture says to Pharaoh, “For this very purpose I raised you up, to demonstrate My power in you, and that My name might be proclaimed throughout the whole 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
The Lord said to Moses, “When you go back to Egypt see that you perform before Pharaoh all the wonders which I have put in your power; but I will harden his heart so that he will not let the people go.
Exodus 11:10
Moses and Aaron performed all these wonders before Pharaoh; yet the Lord hardened Pharaoh’s heart, and he did not let the sons of Israel go out of his land.
Numbers 21:23
But Sihon would not permit Israel to pass through his border. So Sihon gathered all his people and went out against Israel in the wilderness, and came to Jahaz and fought against Israel.
Joshua 11:19
There was not a city which made peace with the sons of Israel except the Hivites living in Gibeon; they took them all in battle.
Judges 11:20
But Sihon did not trust Israel to pass through his territory; so Sihon gathered all his people and camped in Jahaz and fought with Israel.
Romans 9:17
For the Scripture says to Pharaoh, “For this very purpose I raised you up, to demonstrate My power in you, and that My name might be proclaimed throughout the whole earth.”

Obstinate

Isaiah 48:4
“Because I know that you are obstinate,
And your neck is an iron sinew
And your forehead bronze,

General references

Exodus 7:13
Yet Pharaoh’s heart was hardened, and he did not listen to them, as the Lord had said.
Exodus 10:20
But the Lord hardened Pharaoh’s heart, and he did not let the sons of Israel go.
Deuteronomy 29:4
Yet to this day the Lord has not given you a heart to know, nor eyes to see, nor ears to hear.
Job 39:17
Because God has made her forget wisdom,
And has not given her a share of understanding.