Judaism: One Religion or Many Small Religions? Is Judaism composed of many 'small religions' or one underlying religion? Judaism or Judaisms? It has been argued that Judaism can be seen not only as a single religion, but as a group of similar religions. It has also been pointed-out that through all the trials and tribulations that Judaism has suffered through, that there have been common themes that have proven omni-pervasive. Any institution with roots as ancient and varied as the religion of the Jews is bound to have a few variations, especially when most of its history takes place in the political