Its not strange at all. The bible is full off arbitrary requirements of people designed to force the showing of devotion to God. God gave man free will and then got angry when man didn't follow his will.<quoted text>
Just quoting the Bible. It's good to know that God changed his mind. I wonder why He was wrong the first time. That is strange for someone who is omniscient.
You should try actually reading the bible, then find a study group to make sure you understand what it says.