The classic word for universe was cosmos ("to adorn, dress" or "to order and arrange") which I think is instructive here.

Asking how something was created implies a creator. Genesis provides your answer.

Seeing as you are asking in light of the claim that something cannot come from nothing, this is both true and not true as it concerns the cosmos. God created it ex nihilo (creatio ex nihilo) or *out of nothing* as it concerns material reality but the principle of *something cannot come out of nothing* is still true in that all things find their origin in Christ— "All things were made through him, and without him was not any thing made that was made." John 1:3.