The cult of Zoroastrianism is focused on the battle against the evil, and the principal symbol of this is the sacred Fire. The most important place of worship is the Temple of Fire, which a fire burns as a symbol of the holiness of Ahura Mazda.

The veneration of the spirits of the dead is also important in both cult and ethics, and in the orthodox religion, believers are strongly occupied with the hereafter. The believer must beware of demons, i.e. contamination, and this is central in their consciousness and daily acts.

The right behaviour is marked with having the good in mind with your thoughts, your sayings and your acts. There are 5 daily prayers, and ablutions are performed in front of all of these. The believer becomes religiously active from the age of 7.

When a believer dies, his body is brought up to the Tower of Silence, where the corps shall be eaten by vultures, so that neither fire nor earth becomes contaminated. Still, there are graveyards for the believers in Iran, but these represent a part of the cult that is influenced by the dominant religion of the region, Islam.