1st, you can quit telling me what the Romans or Greeks thought, I don't care, they aren't authorities of any sort to me.
2nd, I don't even get your criticism. Are you seriously critiquing God because he isn't as entertaining or temporally inspiring as sacralized/idealized archetypes and forces of nature? Yes God is sterile*, to us, this is the result of our fallen nature, the noetic effects of sin, and our experience as egos and lustful beings. That has no bearing on the fact that God is real, and pagan "gods" are just reflections of us, which is in fact why they are so inspiring and fun.
However the conscience of man quickened by the Holy Spirit* testifies, in all to whom it is given, that while the world is grand, it is also cold, and while we know there is a right, and a great power, we are not it, and the gods we create to please ourselves will all pass with our mortal bodies. Therefore it is only by the power of God (who is shown to everyone everywhere, whether there is particular revelation or not) that anything of man can live, and it is only to the "sterile" and true God that creation and governance of the world can be credited.
You critique God because He is abstract, but your judgement is silly by nature, your POV doesn't permit criticism, you are in no position to pick apart or analyze God. For shall the work say of him that made it, "He made me not"? Or shall the thing framed say of him that framed it, "He had no understanding"? Also whether God lives above, beyond, through-out, or outside of the world is not something a man can say, it is beyond human comprehension, God is not like us or any other created thing.
3rd, the OT isn't a record of all history, and isn't intended to be. Genesis contains the act of creation, but was written with intent, to record the history of salvation and of God and His people. God never "stops" within the frame of the OT, I don't know why you would think that unless you had an erroneous view of what the bible is supposed to be revealing and recording. God never "stopped" at any point, but for revelatory purposes 90% of world history is unworthy of recording. I'm not going to covenantal history here, I know you don't care anyway.
*I'm fully aware that a false belief in ideal archetypes, and full license to indulge in every passion is more exciting than Christianity, Christianity is not fun by any means, but is terrible pain. Every day I'd "more enjoy" to revel in sinful and barbaric life than waiting in agony and guilt for the redemption of the world and coming of Jesus Christ.
*The existence of YHWH can be inferred from even the fallen natural world, given a honest rational inquiry, however man cannot by sinful nature see/does not do this/is unwilling to except the consequences. Different Christian churches have different beliefs regarding this.