Joshua 11:20

For from Jehovah it was to strengthen their heart to meet Israel in war in order to destroy them; no favor to be to them, but to destroy them as Jehovah commanded Moses.

Deuteronomy 20:16-17

Only of the cities of these peoples which Jehovah thy God gave to thee an inheritance, thou shalt not preserve alive and breathing:

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.

Deuteronomy 7:16

And thou didst consume all the peoples which Jehovah thy God gave to thee; thine eye shall not have pity upon them, and thou shalt not serve their gods, for it is a snare to thee.

Romans 9:18

Surely then, whom he will he commiserates, and whom he will he hardens.

Exodus 9:16

And yet for this I raised thee up in order to cause thee to see my strength; and for the sake of declaring my name in all the earth.

Exodus 14:17

And I, behold me binding fast the heart of the Egyptians, and they shall go after them: and I will be honored in Pharaoh, and upon all his army, and in his chariots, and in his horsemen.

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.

Joshua 11:12-15

And all the cities of these kings and all their kingdoms Joshua took, and he will smite them with the mouth of the sword, exterminating them, as Moses the servant of Jehovah commanded.

Judges 14:4

And his father and his mother knew not that it was from Jehovah that he seeking an occasion from Philisteim; for in this time Philisteim was ruling over Israel

1 Samuel 2:25

If a man shall sin against a man, and God judged him; and if a man shall sin against Jehovah, who shall judge for him? and they will not hear to the voice of their father for Jehovah was willing to destroy them.

1 Kings 12:15

And the king heard not to the people, for the turn was from Jehovah for sake of lifting up his word which he spake by the hand of Ahijah the Shilonite to Jeroboam son of Nebat.

1 Kings 22:20-23

And Jehovah will say, Who will deceive Ahab, and he shall go up and fall in Ramoth-Gilead? and this will say according to this, and this said according to this.

2 Chronicles 25:16

And it will be in his speaking to him, and he will say to him, Did they give thee for counselor to the king? Desist; for thyself, wherefore shall they strike thee? And the prophet will desist, and say, I knew that God counseled to destroy thee, for thou didst this, and thou heardest not to my counsel.

Isaiah 6:9-10

And he will say, Go, and say to this people, Hearing, hear ye, and ye shall not understand; and seeing, see ye, and ye shall not know.

Romans 9:22-23

And if God, willing anger to be shown, and his power to be made known, endured in much long suffering the vessels of anger put in proper order for destruction:

Treasury of Scripture Knowledge

Summary

For it was of the LORD to harden their hearts, that they should come against Israel in battle, that he might destroy them utterly, and that they might have no favour, but that he might destroy them, as the LORD commanded Moses.

Bible References

It was

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 9:16
And yet for this I raised thee up in order to cause thee to see my strength; and for the sake of declaring my name in all the earth.
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.
Judges 14:4
And his father and his mother knew not that it was from Jehovah that he seeking an occasion from Philisteim; for in this time Philisteim was ruling over Israel
1 Samuel 2:25
If a man shall sin against a man, and God judged him; and if a man shall sin against Jehovah, who shall judge for him? and they will not hear to the voice of their father for Jehovah was willing to destroy them.
1 Kings 12:15
And the king heard not to the people, for the turn was from Jehovah for sake of lifting up his word which he spake by the hand of Ahijah the Shilonite to Jeroboam son of Nebat.
1 Kings 22:20
And Jehovah will say, Who will deceive Ahab, and he shall go up and fall in Ramoth-Gilead? and this will say according to this, and this said according to this.
2 Chronicles 25:16
And it will be in his speaking to him, and he will say to him, Did they give thee for counselor to the king? Desist; for thyself, wherefore shall they strike thee? And the prophet will desist, and say, I knew that God counseled to destroy thee, for thou didst this, and thou heardest not to my counsel.
Isaiah 6:9
And he will say, Go, and say to this people, Hearing, hear ye, and ye shall not understand; and seeing, see ye, and ye shall not know.
Romans 9:18
Surely then, whom he will he commiserates, and whom he will he hardens.

As the lord

Joshua 11:12
And all the cities of these kings and all their kingdoms Joshua took, and he will smite them with the mouth of the sword, exterminating them, as Moses the servant of Jehovah commanded.
Deuteronomy 20:16
Only of the cities of these peoples which Jehovah thy God gave to thee an inheritance, thou shalt not preserve alive and breathing: