Marcion's God

But I will briefly set it forth and most fully follow it out, laying it down by prescription that God could not have been unknown by reason of His greatness nor ought to have been by reason of His goodness, especially being in both more pre-eminent than our Creator.

Hearing, then, of a new god in an old world and in an old age and under an old god, unknown, unheard of, whom for so many past ages no one knew, and ancient by that very ignorance — one Jesus Christ, and he new under old names, who is said to have revealed Him, and no other before — I give thanks for this their boast, since by it I have a very great help here, being about to prove this heresy, nam …

either we must deny that God is the supreme great One, which no wise man will allow, or we must allow it to be shared with no other.