Briefly describe the religious experience Zarathustra had at the age of thirty.

Name the sacred text of Zoroastrianism. What is the oldest material in the text, and

who wrote it

His seven-teen hymns are the oldest part of the sacred text of Zoroastrianism, the Avesta . Altogether the Avesta is a diverse set of writings spanning a period of one thousand years.

when Zarathustra was about thirty years old, he had a religious experience. An angel called Good Thought appeared to him and brought him, as a disembodied soul, before Ahura Mazda, the Wise Lord. Zarathustra recognized Ahura Mazda as the one true God. After this experience, Zarathustra went around preaching the radical message of monotheism to his polytheistic society.