In Exmas and Crissmas Lewis writes the following: "And those who keep Crissmas, doing the opposite to the majority of the Niatirbians, rise early on that day with shining faces and go before sunrise to certain temples where they partake of a sacred feast."
I never quite knew what he meant by that. I assumed it must be the custom in Anglican churches in England for the people to have refreshments after Christmas morning services, and Lewis' "Herodotus" was mistaking that for something sacred.
Then I read the essay for the first time as a Catholic and thought Ohhhhhhh! Duh!
That tells you how much the Eucharist had faded in importance in my Protestant denomination, even though we had Communion once a month, more often than some churches. And yet it's the one thing Jesus commanded us to do to worship Him. He didn't say, "Hear sermons and sing songs and go to Sunday school in remembrance of me," thought obviously all those things are good. It was "This is my body.... Do this in remembrance of me." The first Christians "devoted themselves to... the breaking of bread", and Paul writes very sternly about doing it properly (lest we be "guilty of profaning the Body and Blood of the Lord"), and Jesus has a long discourse about it in John 6 which even if you insist on interpreting symbolically should still make you figure the symbol is pretty darn important: "Unless you eat the flesh of the Son of Man and drink his blood, you have no life in you". And in the earliest post-Bible description of a Christian worship service, St. Justin Martyr's account from about AD 150, you find that the early Christians celebrated the Eucharist every time they met, and believed that it became the Body and Blood of Christ through the prayer of the priest, just as Catholics believe today. Helps to explain why I've heard of several Protestant ministers who decided to go back to the purity of the early church's worship and ended up concluding, after some study, that that meant having the Eucharist every Sunday. But then, those ministers eventually followed through to the logical conclusion and became Catholic (giving up their livelihoods to do so).
Okay... I didn't quite mean to write an apologetics post here. My point was to make fun of myself for thinking that Lewis' "sacred feast" was coffee and donuts. :)