Christianity and Other Religions - Relationship With Mithraism and Sol Invictus

Relationship With Mithraism and Sol Invictus

There are many parallels between Mithraism, the religion of Sol Invictus, and Christianity. Aurelian is believed to have established the Dies Natalis Solis Invicti (Day of the Birth of Sol Invictus) as an annual festival held on the day when the sun's daily declination visibly starts rising again after the winter solstice, namely on December 25; the birth of the central figure was thus celebrated on the day which Christians later used to celebrate Jesus' birth (having always celebrated this at Epiphany). Other similarities include the stories of Christ and Mithra as children being visited by shepherds, the trinity, and the immortal soul. Sunday itself was imposed as the official day of rest by Constantine, who referred to it as the Day of the venerable Sun. (Although Christians worshiped on Sunday from at least 150 years before Constantine)

The earliest attestation of Mithraism is Plutarch's record of it being practised in 68BC by Cilician pirates, the first mithraists. Tertullian, a Christian writer who lived between the 2nd and 3rd centuries, admitted there was a strong similarity between the practises of the two faiths:

the devil, ... mimics even the essential portions of the divine sacraments...he baptises some, that is his own believers, ... he promises the forgiveness of sins... Mithraism, .... also celebrates the oblation of bread, and introduces a symbol of the resurrection... - Tertullian,

Justin Martyr, an earlier 2nd century Church Father, agreed that the similarities existed, claiming that Mithraism had copied the Eucharist. Justin argued that the devil had invented Mithraism to mock Christianity. However, some writers of Christian apologetics have argued that, because the Gospels were written before 100 and little is known of Roman Mithraism until after 100, it is not possible to definitively state that Christianity borrowed any of its doctrines from Mithraism; some have even suggested it is more likely the flow was the other way. Christian apologist Ronald H. Nash stated:

allegations of an early Christian dependence on Mithraism have been rejected on many grounds. Mithraism had no concept of the death and resurrection of its god and no place for any concept of rebirth -- at least during its early stages...During the early stages of the cult, the notion of rebirth would have been foreign to its basic outlook...Moreover, Mithraism was basically a military cult. Therefore, one must be skeptical about suggestions that it appealed to nonmilitary people like the early Christians.