Enji (Albanian: [ɛɲi]) is the old name of the fire god in the Albanian pagan mythology evidently contained in the weekday name that was dedicated to him – e enjte – the Albanian word for Thursday. The Fire – Zjarri – is deified in Albanian tradition as releaser of light and heat with the power to ward off darkness and evil, affect cosmic phenomena and give strength to the Sun (Dielli, who is worshiped as the god of light, sky and weather, giver of life, health and energy, and all-seeing eye), and as sustainer of the continuity between life and afterlife and between the generations. The divine power of Fire is used for the hearth and the rituals, including calendar fires, sacrificial offerings, divination, purification, and protection from big storms and other potentially harmful events. Fire worship and rituals are associated with the cult of the Sun (Dielli), the cult of the hearth (vatër) and the ancestor, and the cult of fertility in agriculture and animal husbandry. Fire rituals that are commonly found among Indo-European peoples, including the Albanians, have been firstly attested by the Vedas, with hymns dedicated to the fire god Agni. Described in written sources since 1482, the Albanian fire rituals have been historically fought by the Christian clergy, without success. The cult of the mystic fire and the fire ritual practices have played a prominent role in the lives of all the Albanian people until the 20th century, and in rural areas they continue to be important for Albanian traditional customs even in the present days.
The theonym from which Thursday was named in Albanian is considered to have been attested in antiquity in Illyrian theophoric names with the Latin spelling En(n)-. He was presumably worshiped by the Illyrians in antiquity and he may have been the most prominent god of the Albanian pantheon in Roman times by interpreting Jupiter, when weekday names were formed in the Albanian language. The belief in a prominent fire and wind god, who was referred to as I Verbti ("the blind one"), and who was often regarded more powerful than the Christian God, survived in northern Albania until recent times. Under Christianization the god of fire was demonized and considered a false god, and it was spread about that anyone who invoked him would be blinded by fire. The purifying power of fire underlies the Albanian folk belief according to which the fire god is the enemy of uncleanliness and the opponent of filth.