Couldn't an all-powerful god create a mature world?
Edit: when I say mature, I'm referring to all resources having already been created in the beginning.
[url=http://www.universetoday.com/76509/how-was-the-earth-formed/]Well not exactly, there is an entire branch of science dedicated to studying this planet, and has conceptualized the Earth forming over processes mainly surrounding how heat, density, and gravity work.[/url]
That is ofcourse if you are talking about the creation of Earth specifically. Also, I didn't interpret your response like this, but if you meant a mature world as in humans existing, we know for a fact that the Earth is much much older than humanity, and life itself.