Deuteronomy 2:30

And Sihon king of Heshbon was not willing for us to pass by him, for Jehovah thy God hardened his spirit, and made his heart strong in order to give him into thy hand as this day.

Exodus 4:21

And Jehovah will say to Moses, In thy going to turn back to Egypt, see all the wonders which I put in thy hand: do them before Pharaoh; and I will bind fast his heart and he shall not send forth the people.

Numbers 21:23

And Sihon gave not to Israel to pass over by his boundary; and Sihon will gather all his people, and will come forth to meet Israel to the desert: and he will come to Jahaz, and he will fight against Israel.

Exodus 11:10

And Moses and Aaron did all these signs before Pharaoh; and Jehovah will bind fast Pharaoh's heart, and he sent not forth the sons of Israel from his land.

Joshua 11:19-20

There was not a city that made peace to the sons of Israel, only the Hivites dwelling in Gibeon; they took all in war.

Judges 11:20

And Sihon trusted not Israel to pass through in his bound; and Sihon will gather together all his people and will encamp in Jahaz, and he will war with Israel.

Isaiah 48:4

From my knowledge that thou wert hard, and thy neck an iron sinew, and thy forehead of brass:

Romans 9:17-23

For the writing says to Pharaoh, That for this same have I raised thee up, so that I might show in thee my power, and so that my name might be announced in 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 will say to Moses, In thy going to turn back to Egypt, see all the wonders which I put in thy hand: do them before Pharaoh; and I will bind fast his heart and he shall not send forth the people.
Exodus 11:10
And Moses and Aaron did all these signs before Pharaoh; and Jehovah will bind fast Pharaoh's heart, and he sent not forth the sons of Israel from his land.
Numbers 21:23
And Sihon gave not to Israel to pass over by his boundary; and Sihon will gather all his people, and will come forth to meet Israel to the desert: and he will come to Jahaz, and he will fight against Israel.
Joshua 11:19
There was not a city that made peace to the sons of Israel, only the Hivites dwelling in Gibeon; they took all in war.
Judges 11:20
And Sihon trusted not Israel to pass through in his bound; and Sihon will gather together all his people and will encamp in Jahaz, and he will war with Israel.
Romans 9:17
For the writing says to Pharaoh, That for this same have I raised thee up, so that I might show in thee my power, and so that my name might be announced in all the earth.

Obstinate

Isaiah 48:4
From my knowledge that thou wert hard, and thy neck an iron sinew, and thy forehead of brass:

General references

Exodus 7:13
And Pharaoh's heart. will be strengthened, and he will not hear to them; as Jehovah said.
Exodus 10:20
And Jehovah will bind fast the heart of Pharaoh, and he sent not forth the sons of Israel.
Deuteronomy 29:4
And Jehovah gave not to you an heart to know, and eyes to see, and ears to hear, even to this day.
Job 39:17
For God caused her to forget wisdom, and he divided not to her in understanding.