"When God made Adam, in Adam was male and female.
Failed in one sentence.
"
Strangely, he's actually closer to the truth than he realizes. Reading the original Hebrew correctly shows that Adam was indeed both male and female - an androgynous human, consistent with the concept of El (God) being androgynous (which is one thing that actually does distinguish early Hebrew belief from other contemporary religions), and consistent with the Chapter 1 story, in which God creates Man (capped), in God's own image, and creates them "male and female".
And, further evidence of Adam having been androgynous at the outset, the "rib" bone that is so commonly cited is not actually a rib bone. It's the "penis bone" (which of course doesn't exist in humans, but DOES in many other animals and it is quite easy to see how the Hebrews would have noticed that other animals had one, but human males lacked one, and created a story around it). Literally, the original story (without the intentional mistranslations of prudish Christian monks) has God perform an operation on Adam's androgynous sex organs, removing a bone, and fashioning Eve from that. (Remember that the Hebrews didn't know squat about female reproductive systems, and even through Jesus' time believed that women were empty vessels into which men planted their seed, and that seed alone made babies - hence the credibility of a "virgin birth" story in those days, as there was no question but that Mary had NOTHING to do with the conception at all.)
Anyway. Most Christians would be horrified to re-read the Genesis story knowing that Adam had his penis cut open in order to make Eve. But the Jews know it's the correct story. They continue, to this day, to perform a symbolic re-enactment of this with circumcision.