The Cult of Sol Invictus
The Roman Empire began their official recognition of sun worship during the time of Aurelian when he instituted the cult of "Sol Invictus". There is virtually no difference between the cult of Sol Invictus and that of Mithraism or for that matter catholicism.
In the year 307 A.D. Emperor Diocletian, a Sun Worshipper, was involved in the dedication of a temple to Mithra, and was responsible for the burning of Holy Scripture (which made it possible for later emperors to formulate Christianity, and thus began the Roman version of the "Universal Christo-pagan Mystery Religion.") After the rein of Diocletian, the Roman Emperor Constantine, who was an early Christo-pagan (Christian) maintained the title "Pontifus Maximus" the high priest of paganism, and remained a worshipper of Apollo. His coins were inscribed: "SOL INVICTO COMITI", which is interpreted as "Committed to the Invincible Sun". During his reign pagan Sun worship was blended with the worship of the True Creator (syncretism), and officially titled "Christianity" by the (less than holy) Roman Empire and its' official church the (less than holy) catholic (universal) church.
Cybele, the Phrygian goddess, known to her followers as "the mother of god", was closely related to the worship of Mithra. Just as Mithraism was a man's religion, the worship of Cybele was practiced by women. The priests of Mithra were known as "Fathers" and the Priestesses of Cybele as "Mothers". After baptism into the Mysteries of Mithra, the initiate was marked on the forehead. The sign of the cross formed by the elliptic and the celestial equator was one of the signs of Mithra. Sunday (Deis Solis), the day of the Sun, was considered by Mithraist a sacred day of rest. December 25th (the birthday of Mithra) was celebrated as the birth of the Sun, given birth by the "Queen of Heaven" - "Mother of god." The Mithraists celebrated a mithraic love feast. This feast consisted of loaves of bread decorated with crosses with wine, over which the priest pronounced a mystic formula. Mithra was considered mediator between god and man (does this sound like Jesus?).
Mithraists, also, believed in eternal life in heaven, and in the torture of the wicked after death. Many of these beliefs and rituals were exclusive to Mithraism and up until the fourth century were not an official part of the Christo-pagan faith. In the 4th century, through confusion and deliberate manipulation by the Roman Empire and its' official universal (catholic) church, rituals of "Sun Worship" were legitimized, under the guise of the "Authority of the Church" (Yahweh Never Granted Any Such Authority) to be "Christian" in nature. There is no Biblical support for the inclusion of Mithraic rituals (pagan Worship) into the worship of the Yahweh of Abraham, Isaac and Jacob, the Creator of heaven and earth, and the Only Duty of the True Church is one of Obedience To The Authority of Yahweh. It is a Satanic scheme of deception to disguise the transgression of Yahweh's laws under the title of "Christianity" (Christo-pagan syncretism). This same system, characterized by the shrouding of truth in secrecy and the manipulation of the truth in order to achieve its ends, has been working for two millennia to perfect the Christo-pagan religion of Christianity. The mystery of iniquity is at work and it only takes a little leaven to leaven the whole lump. The next step is the actual forced taking of the "Mark of the Beast," however, millions have already taken the "Mark of the Beast" voluntarily.