So if you're saying God is not nothing, he must've come from somewhere right since you say something cannot come from nothing. 

BTW if you're up to date with quantum physics, they're suggestions that the universe CAN come from nothing(no matter, no particles can create everything) such the entire energy of the universe is zero. Go watch the lecture by prof Laurrence Krausse: A Universe from nothing. It's amazing. 

Since you already have the answer. How did God create the Big Bang?