 To attack Christianity for saying, and Judaism, for saying, thou shalt have no other gods before me, the implication is that there's one true God. Well, yeah, I mean, if there's such a thing as God at all, which there necessarily must be, then there will be a true God, and there will be lots of false gods, because we can distinguish between truth and falsehood. Using our reason, that's how you supposedly came to your universal principles, lady.