Ah, I get it.<quoted text>
Some of the Jewish Laws may seem harsh by today's standard. Those 600+ Laws are specific instructions for all aspects of Jewish life. You must remember when they were given by God through Moses the Jewish people had no idea how to live in a community or society they had been living in bondage in Egypt for 400+ years. They needed laws to set up their government, religious rituals and mostly keep themselves pure and separate for God's glory.
All that stuff in the OT was relevant then but has no relevance now.