I answered your ultimate question of where everything came from, what started the cycle, what blew up the Big Bang: the answer is, a quantum vacuum fluctuation. There is no more to "keep going" from that then there is from your idea of "God" as the first cause... the difference being that my explanation is scientifically plausible, while yours is not.

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"Study your math, kids. Key to the Universe." - the Archangel Gabriel, 'The Prophecy'