AshaAsha (ˈʌʃə) or arta (ˈɑrtə; 𐬀𐬴𐬀 Aṣ̌aArta) is a Zoroastrian concept with a complex and highly nuanced range of meaning. It is commonly summarized in accord with its contextual implications of 'truth' and 'right' (or 'righteousness'), 'order' and 'right working'. For other connotations, see Meaning below. It is of cardinal importance to Zoroastrian theology and doctrine. In the moral sphere, aṣ̌a/arta represents what has been called "the decisive confessional concept of Zoroastrianism".
YazataYazata (𐬫𐬀𐬰𐬀𐬙𐬀) is the Avestan word for a Zoroastrian concept with a wide range of meanings but generally signifying (or used as an epithet of) a divinity. The term literally means "worthy of worship or veneration", and is thus, in this more general sense, also applied to certain healing plants, primordial creatures, the fravashis of the dead, and to certain prayers that are themselves considered holy. The yazatas collectively are "the good powers under Ahura Mazda", who is "the greatest of the yazatas".
SraoshaSraosha (𐬯𐬭𐬀𐬊𐬴𐬀 or 𐬯𐬆𐬭𐬀𐬊𐬴𐬀 'sroː.ʃa) is the Avestan name of the Zoroastrian yazata of "Conscience" and "Observance", which is also the literal meaning of his name. In the Middle Persian commentaries of the 9th-12th centuries, the divinity appears as 𐭮𐭫𐭥𐭱, S(a)rosh. This form appears in many variants in New Persian as well, for example سروش, Sorūsh.
Chinvat BridgeThe Chinvat Bridge (Avestan: 𐬗𐬌𐬥𐬬𐬀𐬙𐬋 𐬞𐬈𐬭𐬈𐬙𐬏𐬨 Cinvatô Peretûm, "bridge of judgement" or "beam-shaped bridge") or the Bridge of the Requiter in Zoroastrianism is the sifting bridge, which separates the world of the living from the world of the dead. All souls must cross the bridge upon death. The bridge is guarded by two four-eyed dogs, described in the Videvdat (Vendidad) 13,9 as 'spâna pəšu.pâna' ("two bridge-guarding dogs"). The Bridge's appearance varies depending on the observer's asha, or righteousness.
DaevaA daeva (Avestan: 𐬛𐬀𐬉𐬎𐬎𐬀 daēuua) is a Zoroastrian supernatural entity with disagreeable characteristics. In the Gathas, the oldest texts of the Zoroastrian canon, the daevas are "gods that are (to be) rejected". This meaning is – subject to interpretation – perhaps also evident in the Old Persian "daiva inscription" of the 5th century BCE. In the Younger Avesta, the daevas are divinities that promote chaos and disorder. In later tradition and folklore, the dēws (Zoroastrian Middle Persian; New Persian divs) are personifications of every imaginable evil.
Zoroastrian calendarAdherents of Zoroastrianism use three distinct versions of traditional calendars for liturgical purposes, all derived from medieval Iranian calendars and ultimately based on the Babylonian calendar as used in the Achaemenid empire. Qadimi ("ancient") is a traditional reckoning introduced in 1006. Shahanshahi ("imperial") is a calendar reconstructed from the 10th century text Denkard. Fasli is a term for a 1906 adaptation of the 11th century Jalali calendar following a proposal by Kharshedji Rustomji Cama made in the 1860s.
YashtThe Yashts are a collection of twenty-one hymns in the Younger Avestan language. Each of these hymns invokes a specific Zoroastrian divinity or concept. Yasht chapter and verse pointers are traditionally abbreviated as Yt. The word yasht derives from Middle Persian 𐭩𐭱𐭲 yašt (“prayer, worship”) probably from Avestan 𐬫𐬀𐬱𐬙𐬀 (yašta, “honored”), from 𐬫𐬀𐬰 (yaz, “to worship, honor”), from Proto-Indo-European *yeh2ǵ- or *Hyaǵ-, and several hymns of the Yasna liturgy that "venerate by praise" are—in tradition—also nominally called yashts.
MithraMithra ( Miθra, 𐎷𐎰𐎼 Miça), commonly known as Mehr or Mithras among Romans, is an ancient Iranian deity of covenants, light, oath, justice, the sun, contracts, and friendship. In addition to being the divinity of contracts, Mithra is also a judicial figure, an all-seeing protector of Truth, and the guardian of cattle, the harvest, and the Waters. The Romans attributed their Mithraic mysteries to Zoroastrian Persian sources relating to Mithra.