Welcome to Atheist Republic. Yes, when one gets down and dirty and points out the obvious weaknesses and holes in the biblical stuff, most theists know deep down inside that they cannot rationally explain it. But that is their problem. They are the ones repeating these stories without pausing and actually applying critical thinking.
Here is another tidbit. According to Genesis it took god just one day to create everything outside the atmosphere of the earth, but five to create everything on the earth.