This raises the question: Is there any Jewish group which still stands for Old Testament biblical values?
Moses taught the knowledge he had received directly from God for several periods of 40 days and nights. He taught this for FORTY YEARS before he left behind the written notes known as the Five Books of Moses.
All of orthodox Judaism follows the guidelines set down by Moses. Failure to follow them puts one outside of the definition of ‘orthodox’. Ten to 20 percent of Jews are considered ‘orthodox’.
http://www.simpletoremember.com/vitals/will-your-grandchild-be-jewish-chart-graph.htm