2 Chronicles 20:23

For the sons of Ammon and Moab [suspecting betrayal] rose up against the inhabitants of Mount Seir, completely destroying them; and when they had finished with the inhabitants of Seir, they helped to destroy one another.

Judges 7:22

When Gideon’s men blew the three hundred trumpets, the Lord set the sword of one [Midianite] against another even throughout the whole army; and the army fled as far as Beth-shittah toward Zererah, as far as the border of Abel-meholah, by Tabbath.

1 Samuel 14:20

Then Saul and all the people who were with him rallied and went into the battle; and behold, every [Philistine] man’s sword was against his companion, in wild confusion.

Genesis 14:6

and the Horites in their mountainous country of Seir, as far as El-paran, which is on the border of the wilderness.

Genesis 36:8-9

So Esau lived in the hill country of Seir; Esau is Edom.

Deuteronomy 2:5

do not provoke them, for I will not give you any of their land, not even as little as a footstep, because I have given Mount Seir to Esau as a possession.

Joshua 24:4

To Isaac I gave Jacob and Esau, and to Esau I gave [the hill country of] Mount Seir to possess; but Jacob and his sons went down to Egypt.

Ezekiel 35:2-3

“Son of man, set your face against Mount Seir (Edom), and prophesy against it

Treasury of Scripture Knowledge

Summary

For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.

Bible References

Mount seir

Genesis 14:6
and the Horites in their mountainous country of Seir, as far as El-paran, which is on the border of the wilderness.
Genesis 36:8
So Esau lived in the hill country of Seir; Esau is Edom.
Deuteronomy 2:5
do not provoke them, for I will not give you any of their land, not even as little as a footstep, because I have given Mount Seir to Esau as a possession.
Joshua 24:4
To Isaac I gave Jacob and Esau, and to Esau I gave [the hill country of] Mount Seir to possess; but Jacob and his sons went down to Egypt.
Ezekiel 35:2
“Son of man, set your face against Mount Seir (Edom), and prophesy against it