And the writers explicate, in section after section, the best evidence they knew for human equality. They want to encourage all these types of people to join together and not fight amongst themselves. "ll the peoples of the earth", they point out, "are a single family and have a common origin." We all have just so many teeth, so many molars, just so many little bones and muscles—so we can only have come from one set of ancestors no matter what our color, the shape of our head, the texture of our hair. "The races of mankind are what the Bible says they are—brothers. In their bodies is the record of their brotherhood."