Technically, Rare is right about the idea of a god being any thing one chooses to serve. Thus, atheists believe in god- that is, they answer only to themselves. Nothing dangerous about that.

The first commandment is consistent with Rare's suggestion on that. I think I will rather agree with Cop's POV, at least for this thread, when he says, "It is not necessary to believe that gods exist in order to have a clear concept of what gods are."
I think Cop should recognize that Rare is reflecting a particular Christian pov on the subject, even if Cop has never heard it put that way. It may help inform some other questions. On the other hand, I don't think we should lose the opportunity to try to clear up this concept for Cop.
So, in the first place, Cop, when you say "That's a very nice sentiment, but it doesn't seem to be the way we normally use the word "god" I don't really think you are in a position to speak to that. Even in this thread you have chosen to consider 'Elohim' as being just one in a pantheon. Your idea of what a 'normal use' is is much different than what the monotheists mean. Your idea of 'god' is like Superman, or Spiderman. Would not this be: "A god is usually taken to be a being of some sort that has absolute or near-absolute power over some aspect of physical reality."
This may be a poverty in language in relation to the word 'god' but you are allegedly a linguist, dang it, so you'll pardon me if I have the expectation that you should already know this.

Yes, we use the word 'god' when we speak about the Greek pantheon... 'Zeus,' etc, and we use it when talking about 'Baal,' and even in some sense 'El' in other semitic regions (notice that 'El' and 'Elohim' are different). These 'gods' are like Superman of comic-book lore.
They are not at all what is meant by Christians and Jews, and as far as I know, the Muslims.
Quoting from "The Old Testament Against Its Environment" we find this in a summary statement on this very question in regards to the OT:
"The God of Israel so transcends all things in heaven and earth that he is conceived as their sole creator. The members of his assembly, the belief in which is a survival or borrowing from polytheism, possess no independent authority or even existence or worship. Their being and authority are derived, not primary. The believer is led by them to the worship of their source, yahweh; THEY are thorougly devaluated while he is exalted.." pg 38 ff.
This come in the midst of a longer passage that justly deserves more mention, but it serves well. He concludes, in contrast to your contention:
"that the word "elohim" referred to entities that ancient semitic speakers thought of as supernatural entities"
that
"This doctrine, so offensive to the naturalist and mystic of every age, is precisely the one which raised the problem for Israel of the relation between the revealed religion and the mythopoeic naturalism
of the surrounding peoples. The problem of 'other gods' was thus acute for Israel in a way not comprehensible to the naturalistic polythiest."
You are treading untenable ground in trying to reduce OT theism to a monolatry where the 'god' of Israel is of the same sort, definitionally, as the 'gods' in the surrounding region.
I have begun reading Dawkin's Delusion and noticed a disconnect on this very point. I'll try to leave the worst that I could say out, but give you his definition of 'god' for his hypothesis:
"there exists
a super-human, supernatural intelligence who deliberately designed and created the universe and everything in it, including us."
A 'super-human' ? Shall we presume by this that he only is speaking in relative terms in regards to intelligence, or is he really suggesting that the thing he wishes to debunk is 'super-human'? Its hard to tell, because immediately preceding we read:
"I am not attacking the particular qualities of Yahweh, or Jesus, or Allah, or any other specific god such as Baal, Zeus, or Wotan."
So, the man really thinks that 'Yahweh' and 'Zeus' are in the same category. He appears to think that Christians believe this. Later, in his section on 'monotheism' he retains this equivocation but attempts to explain a more fleshed out version that will fit the 'Abrahamic God.'
"He not only created the universe; he is a personal God dwelling within it, or perhaps outside it (
whatever that may mean), possessing the unpleasantly human qualities to which I have alluded." (emph. mine)
It is the 'outside' it that stands as one of one of the profound differences and distinctions and the man misses it! I'll spare the full review, but the man begins his rebutting of theism without hardly any more development of 'God' then this. Thus, he turns to Aquainas's arguments for 'God' while thinking, laughably, that Aquinas is arguing for Baal by another name.
So, ok. This is the problem. Dawkins is not the only person who cannot understand this problem. I think Dawkins ought not write books if he's going to launch based on such woeful ignorance, but ok. And in some ways, I think that the average skeptic or person on the street is not to be blamed, because Christians have not done a very good job, in general, in discussing the matter. (But Dawkins has no excuse because he appears to have read people that took pains to offer a definition. Perhaps he has a reading disorder), let me offer just a few distinctions:
The God of Christianity (monotheism) is:
1. non-contingent.
It is uncreated. It is eternal. Everything that is exists by its will, energy, and out of its essence. Even Dawkins allows that something is non-contingent: "It is more parsimonius to conjure up, say, a 'big bang singularity,' or some other physical concept as yet unknown" to serve as the thing that is non-contingent. (pg 78). Fine- we are all agreed that something exists, non-contingent. [snip ad hominem on Dawkins]
2. Trancedental.
This is the 'exists outside' thing that apparently baffles Dawkins so much he cannot even factor this into his later discussions. 'God,' the entity defended by Christianity, is related to his creation not the way a circle is related to a sphere [dimensionally], but more like an author is related to its creation- think Hamlet's relation to Shakespeare. Thus the 'logos.'
3. Immanent.
Dorothy Sayers is correct when she points out that theologians are unhelpful when they present the doctrine of creation ex nihilo, because strictly speaking, the universe was not created out of nothing- given #1, the universe would have to have been created out of God. Compare/Contrast the Demiurge creating the universe out of chaotic material. Not even the same thing. The universe was created out of God, thus in some sense his essence pervades all of this creation and any other. [See John 1:1, Heb 1:1]
Given these three things, Francis Collins, I noted, was able to have it dawn on him that one could not have 'empirical' evidence, per se, of God, because strictly speaking, everything that exists exists out of his essence, and more importantly, what exists is not identical with the summation of this being- this being is trancendental AND immanent. Compare/Contrast general Hinduism where brahma=the universe, ie, immanence, no trancendentalism. In Collins book he notes that this being will not be 'scientifically detectable.'
That is not to say that there won't be evidence, just that the evidence we may seek won't be the sort typically found in labs. This is an opportunity for one more jab at Dawkins, who goes after Gould (I also recommend picking on dead people) and this quote:
"The net, or magisterium, of science covers the empirical realm: what is the universe made of (fact) and why does it work this way (theory). The magisterium of religion extends over questions of ultimate meaning and moral value. These two magisteria do not overlap, nor do they encompass all inquiry (consider, for example, the magisteriusm of art and the meaning of beauty [sntjohnny: and the magisterium of historical inquiry]. To cite the old cliches, sicence gets the age of rocks, and religion the rock of ages; science studies how the heavens go, religion how to go to heaven."
Gould says this mainly because he understands the nature of the question, God with parameters #1-3 above. Its not an empirical question. Technically speaking, our empirical reality is permeated with the substance of God. Monotheism does not propose that Elohim is sitting on planet Krypton out there somewhere. When Collins comes to this understanding, he realizes that science cannot strictly speak to the question of monotheism. But Dawkins protests:
"I shall suggest that the existence of God is a scientific hypothesis like any other. Even if hard to test in practice, ... God's existence or non-existence is a scientific fact about the universe, discoverable in principle if not in practice."
How can it possibly, even conceivably, be a scientific hypothesis, under any normal usage of the word 'science'? It can't. Dawkins thinks that 'god' and 'gods' are little super-powered entities running around that perhaps would be uncoverable through careful empirical inquiry.
In fact, God as Christians and Jews understand him, cannot be 'discovered.' God must reveal himself. Thus, none of this means that there is no evidence for the existence of God. It just means that direct empirical inquiry won't provide that evidence. You'll have to look to other sources. Sometimes life just sucks that way.