Then the Lord will go forth, and he will fight against those Gentiles, just as when he fought in the day of conflict
Other versions
King James Version
Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle.English Standard Version
Then the LORD will go out and fight against those nations as when he fights on a day of battle.New International Version
Then the LORD will go out and fight against those nations, as he fights in the day of battle.