Ezekiel 39:4 continues the same prophecy: Gog and his troops fall on Israel's mountains, becoming carrion — directly fulfilling the sword judgment called here.

In Judges 7:22, the Lord sets every man's sword against his companion, causing the Midianite army to destroy each other—a direct parallel to the internal conflict here.

1 Samuel 14:20 shows the Philistine army turning on each other in confusion from God, mirroring the brother-against-brother sword imagery here.

2 Chronicles 20:23 describes Ammon and Moab destroying each other after turning on the Seirites—another instance of God causing enemies to fight internally.

Isaiah 19:2 directly parallels this: God sets Egyptians against Egyptians, brother against brother—a clear type of internal conflict from divine judgment.

Zechariah 14:13 describes a great panic causing people to attack each other — directly parallel to 'every man's sword against his brother' here.