And I will call for a sword against him throughout all my mountains, saith the Lord GOD: every man’s sword shall be against his brother.
The dream is doubled because the thing is certain and demands careful regard. God lets men know of Israel's security, their easy prey, their careless rest, yet He knows they will misuse that knowledge for their own ruin; their safety is real, grounded in His protection, and no weapon formed against them shall prosper.
AI summary
Commenting on Ezekiel 38:14-23
And I will plead against him with pestilence and with blood,.... Not only the sword of the Jews and the sword of Christian princes shall be drawn against him, and the sword of Gog's soldiers against one another; but the Lord himself would plead with him by his judgments, or take vengeance on him, as the Targum; and send a pestilence in his army, which...
every man's sword . . . against his brother--I will destroy them partly by My people's sword, partly by their swords being turned against one another (compare Ch2 20:23).