New Living Translation
If any nation comes to fight you, it is not because I sent them. Whoever attacks you will go down in defeat.

American Standard Version
Behold, they may gather together, but not by me: whosoever shall gather together against thee shall fall because of thee.

Berean Study Bible
If anyone attacks you, it is not from Me; whoever assails you will fall before you.

Douay-Rheims Bible
Behold, an inhabitant shall come, who was not with me, he that was a stranger to thee before, shall be joined to thee.

English Revised Version
Behold, they may gather together, but not by me: whosoever shall gather together against thee shall fall because of thee.

King James Bible
Behold, they shall surely gather together, but not by me: whosoever shall gather together against thee shall fall for thy sake.

World English Bible
Behold, they may gather together, but not by me: whoever shall gather together against you shall fall because of you.

Young's Literal Translation
Lo, he doth diligently assemble without My desire, Who hath assembled near thee? By thee he falleth!

Isaiah 54:15 Additional Translations ...