The Biblical story of Eden comes to us as a Judeo-Christian legend that recounts the creation of all of Earthly Life, and sets the tone for the relationship between Yahweh and humankind. [http://en.wikipedia.org/wiki/Genesis_creation_narrative] It is within this creation myth that for the very first time, the Diety refers as its self as "Us" and "Our" in the first person. Note this is not the proper pronoun " I". It is not the royal 'we' of majesty; it was not the literary style of antiquity for monarchs in the East to refer to themselves in the third person during the time of this writing.
Genesis 1:26 uses the plural reference, regardless of the translation of scripture used [http://bible.cc/genesis/1-26.htm], and it is very clearly intended to describe the existence of more than one individual. The Biblical Commentary Barnes' Notes states:" Only a plurality of persons can justify the phrase. Hence, we are forced to conclude that the plural pronoun indicates a plurality of persons or hypostases in the Divine Being". [http://barnes.biblecommenter.com/genesis/1.htm ] It very quietly indicates the subtle reality that there was an Immanent Divine that was both male and female at work in the creation of humankind.
Traditionally, the authoring of the Book of Genesis-the first Book of the Hebrew Torah and containing the Pentateuch- has been attributed to Moses. Modern scholars from diverse backgrounds now agree this is not the case due to the distinct variations in writing style. It is now believed (and being taught in mainstream schools of theology) that Genesis is a theoretical compilation of sources, specifically Jahwist, Elohist, Priestly, Deuteronomy and (sometimes) Redactor. [http://biologos.org/uploads/resources/enns_scholarly_essay3.pdf]
I hope you enjoy the video as much as I did.