Why would God choose to do anything, what would cause a desire to manifest itself in a needless being, one who cannot be affected by anything?
And free will, "in the absolute sense", is an absurd concept. How you can combine the concepts of 'free' and 'will', I cannot fathom.
Yes.
This Abrahamic god is itself bound by a kind of determinism. It has its own intrinsic attributes and preferences, over which it had no role in assigning to itself.
This being simply has the desires, like that to be worshipped, that it has for no reason. Everything this god did and wanted was, essentially, written into its being without any consent or willingness on its part.
And so, everything that it itself does is the result of a default state of affairs over which this god had no control. It just wants worshipped because it does. It just is capable of anger or jealousy because it is.
Given this, it itself is bound by determinism, just as humans are. We too have intrinsic predispositions and preferences that we did not choose and that we act in accordance with. This god is the same. Everything it ever did was the direct result of something over which it had no control; its own nature.
This god has simply acted in accordance with what fate has, by some incredible fluke, given it.
I would say, therefore, that this god is not the 'greatest conceivable being.' Rather, it's more or less like a human; entirely contingent upon what fate has given it. It has created nothing by itself, it only has what's intrinsic to it, and nothing else, and by no effort on its part.
Such a god is not, in my estimation, free. I imagine that such a being would inevitably realise the completely trivial and illusory nature of its own desires and sentiments. And realising this, would it not then choose to be free of them, completely superfluous and meaningless as they are?
Even if the god of Islam/Judaism/Christianity did exist, it would never be able to escape the reality of its own condition. Its existence would forever be one of absolute meaninglessness and illusion, and everything it ever did would already have been decided for it, by an arrangement of metaphysics over which it had no control.
This god never earned, chose or created anything that it has. It, like man, was and will always be a puppet of fate.