This eternal Being is what you cannot produce. If this eternal Being sent his only son, we have two separate and distinct Beings, the Son and the Father. A father can produce a son with his sperm (which is himself), but he cannot create a fully developed Son (a fact for which the moter is, I'm sure, eternally grateful). The son, as is the case with myself and my father and you and your's are no where near the same. You cannot say God who is in heaven and his son who is on Earth are synonymous. Such feeble attempts at proofs of this Being's existence is dismissed immediately by thinking people.