So then what did god make it out of?
Why do you suppose that "Nothing" existed to begin with?
I think the 'name' of God in the abrahamic religions speaks volumes: "I am."
It's the ultimate question of sentience. You are not sentient until you have pondered the legitimacy of your own existence. The more we delve into physics, the more 'freaky' things become - and the more our experiments begin to allude to concepts explored by early mystics.
Einstein's quote regarding Quantum Mechanics says it all (and more accurately describes his issue with QM): "I should think that the moon is there even when I am not looking at it!" Quantum Mechanics forces a collision between consciousness and physical reality. It's an issue that has been a skeleton in the closet for a long time - largely seen as irrelevant because "it only works on small things."
But we've recently been seeing that it, in fact, doesn't work on just small things. Visible objects have been placed into quantum super-positions (coherent states), and we've shown through other experiments that coherence ends via the sharing of information (which means that any instrument used to measure the outcome is entangled within the coherent system until the measurement is shared in a way that conscious observation is aware of it... which -forces- some very, very uncomfortable questions).
At the end of the day... you're forced to ask yourself: "Does this world exist? Do I even exist?" There are two possible conclusions you can come to. You can reject the experience before you, or you can accept it as real; make the claim: "I am."
Whatever led to the use of the "I am" to refer to God in early texts, it reveals that the being(s) responsible had wrestled with this philosophical problem and decided it was the best - perhaps the only - way to identify itself.