You claim that there is only one god; no more, no less. Exactly one and only one (since 1=3 and 3=1). To make such a claim that no other gods exist requires absolute knowledge. To say "there are no other gods," and to be correct in the statement, you must be omniscient.There's obviously other things wrong about the statement (such as the correct part), but I thought that was humorous to point out if no one else had thought to post that back to him every time he pulls out the absolute knowledge argument against atheists "knowing there is no god."
I could anticipate Ray's response to this: We know there is God and God knows there is no other god. Since God is omniscient, we also know there is no other god. Therefore, there is only one god: the Christian God. QED.