Rephrase that to read "No thing can come from nothing" and it makes more sense. "Nothing" is a concept that seems to refer more to the idea of "nothingness". "Nothing" seems to refer to a "thing" that we call "nothing".
To call "nothing" a thing is to reify it. Reify means to mistake that which is conceptual only for something that is empirical. "Nothingness" is not empirical.
Something from nothing is an ancient idea, which in Latin is "Ex nihilo", and not even the most ardent theologists believe it anymore. That is why they say "God existed first." That way, "something" did not come from "nothing."
So "how did we get here?" Well, first, think of this question: Why do we say that matter and energy are forever, they merely change, matter becoming energy and energy becoming matter? If you believe that to be true, then the following quote will make sense:
"Existence is a self-sufficient primary. It is not a product of a supernatural dimension, or of anything else. There is nothing antecedent to existence, nothing apart from it—and no alternative to it. Existence exists—and only existence exists. Its existence and its nature are irreducible and unalterable." Leonard Peikoff
Existence always "has been" and always "will be".