Compiler error line 1: "what/who", "created", are undefined concepts in the scope you are using them. You don't do that with code, why should you be able to do in philosophical reasonings?
First you define "creation" in the context of the domain of the hypothetical god (hint, you can't tell nothing about ANYTHING in it at all since you cannot experience it and if you could you couldn't prove you did not even to yourself).
Then you define "who" in the context of the domain of the hypothetical god, (hint above applies, plus, no space means "who" can't be identified, that is, told apart the rest).
Religions have it easy. "god told me that... " can mean that a concept, which is potentially incomprehensible in its own domain, gets translated in ours like...
As demigod of a 2d simulation I could say that a cube is like a square. Now it's up to the simulation to believe me or not, truth won't ever be reachable from the inside.