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.