If YHWH presented himself in the 3rd temple declaring himself to be God before the whole world, would you be excited, confused or...?

What if the plot twist was that YHWH is the adversary; He'd have both Jews and Christians in his pocket.

He would be in the perfect position to have billions of people fight on his behalf in his 'Army of the LORD (YHWH)' to fight against the coming invasion... (aka the coming Priest King [Jesus] to redeem mankind from the God of this world).

Food for thought.