Zoroaster other Zoroastrian elements are either not part of Zoroaster's own teachings or are used quite differently from how they are used in Zoroastrianism. Zoroaster appears in the Bahá'í Faith as a "Manifestation of God", one of a line of prophets who have progressively revealed the Word of God to a gradually maturing humanity. Zoroaster thus shares an exalted station with Abraham, Moses, Krishna, Jesus, Muhammad, the Báb, and the founder of the Bahá'í Faith, Bahá'u'lláh. Shoghi Effendi, the head of the Bahá'í Faith in the first half of the 20th century, saw Bahá'u'lláh as the fulfillment of a post-Sassanid Zoroastrian
Zoroaster died when he was 77 years and 40 days old. The later Pahlavi sources like Shahnameh, instead claim that an obscure conflict with Tuiryas people led to his death, murdered by a "karapan" (a priest of the old religion) named Brādrēs. In the Gathas, Zoroaster sees the human condition as the mental struggle between "aša" (truth) and "druj" (lie). The cardinal concept of "aša"—which is highly nuanced and only vaguely translatable—is at the foundation of all Zoroastrian doctrine, including that of Ahura Mazda (who is "aša"), creation (that is "aša"), existence (that is "aša") and as the condition for free