The temples carry Zoroaster’s image, dressed in a white robe and wearing a white turban.
Zoroaster denounced blood sacrifice but retained the ritual of sacrifice through fire, since fire is a symbol of Truth and Order. In Zoroastrian religious services, fire ceremonies in the temple play an important role and form the distinguishing feature of this doctrine. Zoroaster chose fire as the outward symbol of faith, since it has special importance as the most sacred of nature’s powers.
Fire is the principal cleanser of all sin as well as being the purest of all things that God created. Fire has the power to make everything that touches it resemble itself and immediately change its form. The flames, which always travel upward, symbolise the desire to live on a higher plane. Fire in temples is never under any circumstances allowed to go out, and in households is protected as a sacred entity.
The concept of Fire-Temples did not originate with Zoroaster. It is thought that fire-worship originated in the period 1500-1200 BCE during the reign of the first Persian king Jamshid. Centuries later, with the emergence of Zoroaster, fire temples were in use. The ancient Aryan god Mitra in the Vedas or Mithra in the Avesta (Zoroastrian holy book), was the celestial god of light. Mitra is light, not the sun, which is merely his material medium.