2 Chronicles 20:23

For the children of Ammon and Moab stood up against the inhabitants of Mount Seir, utterly to kill and destroy them: and when they had made an end of the inhabitants of Seir, everyone helped to destroy another.

Judges 7:22

They blew the three hundred trumpets, and Yahweh set every man's sword against his fellow, and against all the 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

Saul and all the people who were with him were gathered together, and came to the battle: and behold, every man's sword was against his fellow, [and there was] a very great confusion.

Genesis 14:6

and the Horites in their Mount Seir, to Elparan, which is by the wilderness.

Genesis 36:8-9

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

Deuteronomy 2:5

don't contend with them; for I will not give you of their land, no, not so much as for the sole of the foot to tread on; because I have given Mount Seir to Esau for a possession.

Joshua 24:4

I gave to Isaac Jacob and Esau: and I gave to Esau Mount Seir, to possess it. Jacob and his children went down into Egypt.

Ezekiel 35:2-3

Son of man, set your face against Mount Seir, 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 Mount Seir, to Elparan, which is by the wilderness.
Genesis 36:8
Esau lived in the hill country of Seir. Esau is Edom.
Deuteronomy 2:5
don't contend with them; for I will not give you of their land, no, not so much as for the sole of the foot to tread on; because I have given Mount Seir to Esau for a possession.
Joshua 24:4
I gave to Isaac Jacob and Esau: and I gave to Esau Mount Seir, to possess it. Jacob and his children went down into Egypt.
Ezekiel 35:2
Son of man, set your face against Mount Seir, and prophesy against it,