I’ll need to know the exact verses. Yahweh has already had a physical form - through Jesus, who’s identified as the actual creator of the world. There are plenty of appearances Jesus makes in the Old Testament as well through Christophanies. Now I hear you saying something about “oh that’s just a modern Christian interpretation put on old Jewish texts”, but the Incarnation of our Lord actually shows that God has always had that physical aspect of Him - Jesus Christ. Who was shown in fullness during the 33~ years He was on earth.
Again, the existence of worship of other gods like Baal and Asherah doesn’t mean Christianity was ever polytheistic - in fact, the narrative strongly shows Baal and Asherah to be false gods - attributions. Not something that was actually canon, just a competing belief system. Kind of like how Mormonism claims to be an addition to Christianity, yet isn’t Christian canon but is just a competing belief system, you had someone attributing a goddess to a yahweh as his wife.
In Christianity though, the bride of Christ is actually The Church - but that’s a whole and another topic.
I mean, idk if we’re having some difference in understanding, but this is a bit out of my scope as far as spiritual interpretation. I’m an atheist looking at it more in thought experiment mode with some historical reference. If those are your beliefs then power to ya, but it’s not quite my bag of tea to debate spiritualism, sorry:) if I’ve misunderstood please lemme know