Alma 54:20

nevertheless, I will grant to exchange prisoners according to your request, gladly, that I may preserve my food for my men of war; and we will wage a war which shall be eternal, either to the subjecting the Nephites to our authority, or to their eternal extinction.

But I will agree to trade prisoners like you asked. I am happy to do this. I can save my food for my warriors. We will fight a war that goes on forever. Either the Nephites will obey us, or they will be destroyed forever.

Still, I’ll agree to exchange prisoners like you asked. I’d be glad to free up food for my fighting men. We’re going to wage an eternal war—either until the Nephites submit to our rule, or until they’re completely wiped out.