Originating from Zoroaster’s teachings is about the 9th or 10th century B.C., Zoroastrianism may be the oldest continuing creedal religion. Its essential beliefs center on a transcendent creator God, Ahura Mazda, and the concept of free will. Zoroastrianism’s fundamental ethical tenets expressed in its scripture, the Avesta, are based on a dualistic worldview.
One may prevent chaos if one chooses to serve God and exercises good thoughts, good words, and good deeds. Zoroastrianism is generally a closed religion, and members are almost always born to Zoroastrian parents. Before the spread of Islam, Zoroastrianism dominated greater Iran. Today, though a minority, Zoroastrians remain primarily in Iran, India (known as Parsi), and Pakistan.