In The Land Of The Dollar Bill: Furiko Reads The Dresden Files (Grave Peril)
Pretty sure pre-Jesus stuff, at least Moses, acknowledged that other gods existed. They were just seen as shittier gods. Theological discussions back then were more like Vs. debates between die-hard fans of different franchises, with bad faith debating and everything, except the losers tended to get killed, since that's how you knew they had lost.
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Furiko Reads Grave Peril, Part 4