To me, that narrative looks like an attempt to answer the question, "Why are we humans so different from all other life on Earth?"

Though I have never thought it was to be taken literally, it is interesting how much it conforms with science, especially in the general sequencing of the process: the light from what we call the Big Bang preceded the light of the Sun; science hypothesizes water came to Earth in a 'rain' of comets and that the oceans formed from millions of years of rain as we know it; flora preceded fauna; humans came last. One might also say that the "people" appearing at the end of Chapter 1 are Homo erectus and that Adam and Eve refer to the first Homo sapiens--created for the special purpose of tending to the Garden God created for them to live in.