It is important to have some conception of this literary God because the translations of Hebrew, Torah and Christian stories are built into our English language, our metaphors and our Western conceptual world.
One of the most powerful elements of this literary God is something that former president Jimmy Carter figured out... he punishes the enemies of the Jews.
Another element that this literary God makes clear, and president Obama never learned because his minister of 20 years was a Jew hater, is that Jerusalem is the sacred city built by and for Jews.
It strikes me that literary narratives have very strong influence on the way humans think.
Whether there is or is not a God, even in Spinoza's sense, it must be that the literary narrative has an effect in the world .... wherever Western traditions have an influence.