The Eucharist appears to be an ancient Greek ritual.
For example, from Euripides' Βάκχαι (
The Bacchae) (tr. Ian Johnston) ─
TIRESIAS:
[...]
Young man, among human beings two things
stand out preeminent, of highest rank.
Goddess Demeter is one—she’s the earth
(though you can call her any name you wish),
and she feeds mortal people cereal grains.
The other one came later, born of Semele—
he brought with him liquor from the grape,
something to match the bread from Demeter.
He introduced it among mortal men.
When they can drink up what streams off the vine,
unhappy mortals are released from pain. [280]
It grants them sleep, allows them to forget
their daily troubles. Apart from wine,
there is no cure for human hardship.
He, being a god, is poured out to the gods,
so human beings receive fine benefits
as gifts from him. And yet you mock him. Why?
'The other, born of Semele' is Dionysos, god of wine (&c).
But of course the NT is written in Greek, Jesus born of a virgin by divine insemination follows Greek mythology, 'take to the roads, meet people, trust in the Lord for your food' is Greek Cynic philosophy ─ and so on.