Zoroastrianism and Judaism are the two fundamental religions that have had a large number of followers for more than 2 000 years. Zoroastrianism was formed approximately in the 6th century BC by Zoroaster, who is also commonly known as Zarathustra. While the establishment of Judaism is generally associated with the same period, the origins of the religion can be traced back to the 18th century BC.
Many experts believe that the two religions are closely interconnected and have significantly affected the development of each other. This interaction might explain some similarities, such as the monotheistic nature, view on the afterlife, concepts of saviors or messiahs, and doctrines on good and evil origins. Ultimately, Zoroastrianism and Judaism are some of the oldest religions in the world, which have significantly affected the consequent forms of faith.