Used in solemn Roman Catholic, Lutheran, Reformed, Anglican, and Methodist celebrations of the Easter Vigil held after sunset on Holy Saturday, concluding the Paschal Triduum.
[2][3][4] As a sacrament in remembrance of the Resurrection of Jesus, the Catholic Mass according to Roman rite begins with a big celebration of light (Lucernarium): an open fire is lighted outside the church and blessed by the priest; when the Paschal candle is lit, the community ceremoniously enters the dark church chanting Lumen Christi and Deo gratias.
[5] According to the Eastern Orthodox tradition of the Holy Fire, worshippers light candles from the Paschal trikirion during service at Saturday Midnight, while the troparion is sung.
The fire is symbolic of the undimmed light of Christ despite the pagan government's attempts to put it out and marked the beginning of the conversion of Ireland to Christianity.
[7] Amongst South Slavs (Serbs, Montenegrins, Slovenes, Croats, Bulgarians, Macedonians, Bunjevci and Šokci), it is required to jump over the flames of Easter (Serbian Cyrillic: Крљавештице, romanized: Krljaveštice).