It is a very ancient religion and both Christianity and Judism are said to be based on it. It was the first religion to recognize One God. The Magi were from Persia, home of the Zoasters. The similarities between the astounding. It IS from the time of Cyrus (and before). As you know, Cyrus is mentioned quite favorably in the Bible as the friend and savior of the Jewish people. He rescued them and kept them safe.
ooops, amend that to "the similarities between the religions"
Thanks McGavin for spreading the good word -