Yes there is but one God but there are a lot of gods.There is but one God, you are clearly a wahhabi or a kabbalist,
Angels are gods and so satan is a god.
It's just an expression of God's presence in the Jerusalem temple."God used to sit"!, God has no need, to sit or anything else,
Right but a god who wants to be like God can fool a lot of people.and even if he did, absolutely nothing in the whole universe, single or combined, can dethrone God.