Sure, I think we should look for natural responses first, given their track record. But this track record does not rule out supernatural, for it only takes one time. The universe only had to come into existence one time, so whatever caused it, only had to perform that act one time. We’re not going to see other instances of universe creation that we can study, repeat, test and verify. But this does not make them impossible.
By the by, this just in from one of my favorite Christian resources Stand To Reason. What fortuitous timing!