Satan Delivers Bone-Chilling, Shocking Message To the World On Television-Death Is Here, and You Had Better Get Ready Right Now! (Brand New Stunning Videos)

From your web link. “It is a leading candidate for the “pagan copycat” thesis crowd as a supposed source for Christianity.”

It’s not via a “pagan copycat” thesis crowd”" but professional Christian scholars. A few examples:

Mithra was born on December 25th as an offspring of the Sun. Next to the gods Ormuzd and Ahrimanes, Mithra held the highest rank among the gods of ancient Persia. He was represented as a beautiful youth and a Mediator. Reverend J. W. Lake states: “Mithras is spiritual light contending with spiritual darkness, and through his labors the kingdom of darkness shall be lit with heaven’s own light; the Eternal will receive all things back into his favor, the world will be redeemed to God. The impure are to be purified, and the evil made good, through the mediation of Mithras, the reconciler of Ormuzd and Ahriman. Mithras is the Good, his name is Love. In relation to the Eternal he is the source of grace, in relation to man he is the life-giver and mediator” (Plato, Philo, and Paul, p. 15).

The International Encyclopedia states: “Mithras seems to have owed his prominence to the belief that he was the source of life, and could also redeem the souls of the dead into the better world … The ceremonies included a sort of baptism to remove sins, anointing, and a sacred meal of bread and water, while a consecrated wine, believed to possess wonderful power, played a prominent part.”

Chambers Encyclopedia says: “The most important of his many festivals was his birthday, celebrated on the 25th of December, the day subsequently fixed — against all evidence — as the birthday of Christ. The worship of Mithras early found its way into Rome, and the mysteries of Mithras, which fell in the spring equinox, were famous even among the many Roman festivals. The ceremonies observed in the initiation to these mysteries — symbolical of the struggle between Ahriman and Ormuzd (the Good and the Evil) — were of the most extraordinary and to a certain degree even dangerous character. Baptism and the partaking of a mystical liquid, consisting of flour and water, to be drunk with the utterance of sacred formulas, were among the inauguration acts.”

Prof. Franz Cumont, of the University of Ghent, writes as follows concerning the religion of Mithra and the religion of Christ: “The sectaries of the Persian god, like the Christians’, purified themselves by baptism, received by a species of confirmation the power necessary to combat the spirit of evil; and expected from a Lord’s supper salvation of body and soul. Like the latter, they also held Sunday sacred, and celebrated the birth of the Sun on the 25th of December…. They both preached a categorical system of ethics, regarded asceticism as meritorious and counted among their principal virtues abstinence and continence, renunciation and self-control. Their conceptions of the world and of the destiny of man were similar. They both admitted the existence of a Heaven inhabited by beatified ones, situated in the upper regions, and of a Hell, peopled by demons, situated in the bowels of the Earth. They both placed a flood at the beginning of history; they both assigned as the source of their condition, a primitive revelation; they both, finally, believed in the immortality of the soul, in a last judgment, and in a resurrection of the dead, consequent upon a final conflagration of the universe” (The Mysteries of Mithras, pp. 190, 191).

Reverend Charles Biggs stated: “The disciples of Mithra formed an organized church, with a developed hierarchy. They possessed the ideas of Mediation, Atonement, and a Savior, who is human and yet divine, and not only the idea, but a doctrine of the future life. They had a Eucharist, and a Baptism, and other curious analogies might be pointed out between their system and the church of Christ (The Christian Platonists, p. 240).

McClintock and Strong wrote: “In modern times Christian writers have been induced to look favorably upon the assertion that some of our ecclesiastical usages (e.g., the institution of the Christmas festival) originated in the cultus of Mithraism. Some writers who refuse to accept the Christian religion as of supernatural origin, have even gone so far as to institute a close comparison with the founder of Christianity; and Dupuis and others, going even beyond this, have not hesitated to pronounce the Gospel simply a branch of Mithraism” (Art. “Mithra”).

The Christian Father Manes, founder of the sect known as Manicheans, believed that Christ and Mithra were one. His teaching, according to Mosheim, was as follows: “Christ is that glorious intelligence which the Persians called Mithras … His residence is in the sun” (Ecclesiastical History, 3rd century, Part 2, ch. 5).