From a FaceBook discussion:
As arguably the oldest book in the world, I don't think it cares much what we think, nor should it. If we assume that every sentence of a miraculously preserved record sent through eons of time and space to be immediately edifying in the way that motivational/inspirational quotes are, I think we are expecting the wrong things and missing out on the amazing things. Genesis, and the OT in general, if they have an overall theme, seem to be about how the chosen people, and, ultimately the Messiah (God), have a very checkered genealogy. We are all both divine and dirty. I mean, we're made out of dust and spirit.