These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Book of Exodus
Big Lipped Alligator Moment: The "Zipporah at the inn" episode. After God sent Moses in Egypt to deal with the Pharaon, HE sends his angel to kill His prophet for unexplained reasons. Then Moses' wife Zipporah takes a sharp stone, and cut off the foreskin of their son. This apparently saves Moses. It's pretty obscure and no wonder why this is often ignored.
Values Dissonance: Yes, there are laws about how to deal with slaves. These would almost be hilarious (if not for the slavery), considering they're given to escaped slaves. There are also laws saying that the penalty for rape is marrying the victim and paying her father 50 shekels. And if a woman wasn't a virgin when you married, or has been unfaithful, you can have her executed.
Fair for Its Day: Said laws did give slaves of the Hebrews much better lives. Fellow Hebrews who were slaves were expected to be freed after 6 years of work and generously paid at that time. Foreigners could be slaves for life but if they experienced violence at the hands of their masters they were automatically declared free under the law. Quite different from the slavery in Egypt or the slavery in America before the Civil War.
However, the master is not guilty if the slave dies one or two days after he hit him...