the multiple god issues presented in your links are simply explained by understanding that the bible is speaking of idol gods.
the first two verses in genesis that are on the multiple gods side of one of your links is speaking of the trinity(god the father, God the son, God the holy spirit).
trinity = the father, son, holy spirit. one being
which is God/the Godhead comprised of 3 persons
as far as your belief or expectation that god should be the same to everyone. i dont see how you can deny the creator of the universe and all that is in it the ability to serve justice to those who go against him.
we are created things going up against the one who created us. we're going up against a holy god who does not tolerate sin. what is sin?
sin = opposition to the supreme will of God the creator.
we still make idols even today but the biggest idol of men is and always has been "self".