Nature, I am not going to respond point for point in regards to the pantheon thing, because I dont see a point in it.

To put it simply, I find it humorous that you say we need to look at texts in the bible to clarify one of God's laws. I didnt see anything next to that commandment that said, (see such and such). Its a law, it stands on its own, and its very clear. He says worship no other gods. The next commandment is seperate from the others. They are all seperate from each other, otherwise that commandment wouldnt be a commandment, but a subsection of the one before it.
You havn't the slightest clue as how to go about exegesis. It doesn't matter that it's seperate from the others. The fact that the very next verse refers to graven images (i.e. false Gods) clarifies the meaning. And there's no room for inference to take it to mean he's referring to real Gods. It a simple statement : Have no other Gods before him. If he was talking about false Gods that's a very normal way to say it. to He says himself over and over again that there are no other Gods. You argue God "cannot have made a mistake", so is he making a mistake there? Your interpretation is in trouble now. "no other Gods" can also refer to Gods which have no idol such as Allah. I just can't believe you're arguing this. It's so obvious that you're heart is hardened and you bicker about foolish things. If you argued that before any Hebrew scholar he wouldn't take you seriously. He would very likely laugh at you, even if he wasn't a Christian. You're wasting my time.

God said dont worship any other Gods before me. I want to know what other Gods those might have been.
There are none, like He says, there are no other Gods. You're going to to twist scripture like that and say God cannot lie so thus and thus, but he clearly states there's no other Gods multiple times and you don't take it as evidence at all. Oh he couldn't have been lying before, but he's lying now is he?

And since we have shown, in a round about way, that this God is what some might consider a jealous and petty God, and you need look no further then the Old Testament for proof of that, I dont think it would be a stretch to think that he would try to ensure that people didnt believe in anyone but him by claiming he was the one and only god.
He might seem like a foolish and petty God to someone who is a fool and has no understanding. There is one type of love given to animals, one type given to children, another type given to men, another variation given to your wife, and there's a special type of Love for God. He deserves our worship. He deserves our dedication to him as God only, and it's great sin and blasphemy to worship some false God that cannot save. It's personally insulting and a great sin. It's a lack of love to God, and that's a greater sin than anything else. I completely understand how he is "jealous", and that is not petty, that is righteous. A man would be "jealous" if his wife went off with another man. A mother would be "jealous" if her children disregarded her who raised them and went off and honored some other woman. How much more then should, we give honor and Love and worship to God who created all things and has given us life?

Thats just going on all the documented things that were written in the bible. Do I think God is those things? Idk, but if he really is, I would have to question if he isnt just something much more advanced then us, and not an actual god.
There are more than a few examples of idol worship in the bible and God condemning it in the books of Moses. I already showed one verse in Deuteronomy (actually more than one) where God claimed there is no other God. And you have no argument to choose one book or chapter and discriminate against the other books. Actually you have no reason to disregard any of them, they are all authentic historical records by all standards.

There are however, false living Gods. Paul talks about these. I don't suggest you try to "know" them to well at all, especially since they are demons.

1 corinthians 10

19What say I then? that the idol is any thing, or that which is offered in sacrifice to idols is any thing?

20But I say, that the things which the Gentiles sacrifice, they sacrifice to devils, and not to God: and I would not that ye should have fellowship with devils.