righteous will not burn but through which the impure will be completely purified. The forces of good will ultimately triumph over evil, rendering it forever impotent but not destroyed. The Saoshyant and Ahura Mazda will offer a bull as a final sacrifice for all time and all humans will become immortal. Mountains will again flatten and valleys will rise; the House of Song will descend to the moon, and the earth will rise to meet them both. Humanity will require two judgments because there are as many aspects to our being: spiritual (menog) and physical (getig). Thus, Zoroastrianism can be said to be a universalist religion with respect to salvation in that all souls are redeemed at the final judgement. Ritual and prayer The central ritual of Zoroastrianism is the Yasna, which is a recitation of the eponymous book of the Avesta and sacrificial ritual ceremony involving Haoma. Extensions to the Yasna ritual are possible through use of the Visperad and Vendidad, but such an extended ritual is rare in modern Zoroastrianism. The Yasna itself descended from Indo-Iranian sacrificial ceremonies and animal sacrifice of varying degrees are mentioned in the Avesta and are still practiced in Zoroastrianism albeit through reduced forms such as the sacrifice of fat before meals. High rituals such as the Yasna are considered to be the purview of the Mobeds with a corpus of individual and communal rituals and prayers included in the Khordeh Avesta. A Zoroastrian is welcomed into the faith through the Navjote/Sedreh Pushi ceremony, which is traditionally conducted during the later childhood or pre-teen years of the aspirant, though there is no defined age limit for the ritual. After the ceremony, Zoroastrians are encouraged to wear their sedreh (ritual shirt) and kusti (ritual girdle) daily as a spiritual reminder and for mystical protection, though reformist Zoroastrians tend to only wear them during festivals, ceremonies, and prayers. The incorporation of cultural and local rituals is quite common and traditions have been passed down in historically Zoroastrian communities such as herbal healing practices, wedding ceremonies, and the like. Traditionally, Zoroastrian rituals have also included shamanic elements involving mystical methods such as spirit travel to the invisible realm and involving the consumption of fortified wine, Haoma, mang, and other ritual aids. Historically, Zoroastrians are encouraged to pray the five daily Gāhs and to maintain and celebrate the various holy festivals of the Zoroastrian calendar, which can