Some suggest that Christianity borrowed some key doctrines from Mithraism, like the Eucharist. Below are some quotes from truthbeknown.com/mithra_4.htm
The eucharist includes the “doctrine of transubstantiation,” which claims that the wine or water and bread of the sacred meal are mystically and magically transmuted into the blood and body of the god, which, it is believed, creates union with the god. At the Mithraic ceremony, the following was said:
“He who will not eat of my body, nor drink of my blood so that he may be one with me and I with him, shall not be saved.” (Mithraic Communion, M.J. Vermaseren, Mithras, The Secret God)
Since the Persians who worshipped Mithra were originally of the same ethnicity as the Indians who revered Mitra, it would be logical to assert that this rite within Mithraism is likewise ancient, possibly dating to early or pre-Vedic times, 1500 years or more before the Christian era. Indeed, the eucharist or communion was part of the ancient Persian religion, apart from Mithraism
The ritual of theophagy, or the eating of gods/goddesses, Harwood further asserts, has been practiced by humans for some 30,000 years. Obviously, this practice is novel neither to Mithraism nor Christianity, and there was certainly no need for the former to take it from the latter.
How do we respond to this?