You label it "a gem of an error" but didn't provide his entire argument for context, or his sources.
---
Here let it be noted that most people think that the word, "Christmas" means "the birth of Christ." By definition, it means "death of Christ", and I will prove it by using the World Book Encyclopedia, the Catholic Encyclopedia, and a book entitled, The Mass In Slow Motion.
If you are an honest, sincere and discerning Christian, please read on; if not, you might as well stop right here. The World Book Encyclopedia defines "Christmas" as follows: "The word Christmas comes from "Cristes Maesse", an early English phrase that means "Mass of Christ." (1) It is interesting to note that the word "Mass", as used by the Roman Catholics, has traditionally been rejected by the so-called Protestants, such as Lutherans, Baptists, Methodists, Presbyterians, Pentecostals and so on. The word "Mass" is strictly a Catholic word and thus, so is "Christ-Mass."
It would stand to reason, that since all of these denominations love and embrace "Christ-Mass", that December 25th is the great homecoming day, when all of the Protestants become Catholic for a day. It would seem that all of the so-called "wayward daughters" of the Romish church return to their mother, the scarlet harlot. Thus, all of the so-called Protestant churches could sing to the Pope that popular song "I'll be home for Christmas."
As previously stated, the word "Mass" in religious usage means a "death sacrifice." The impact of this fact is horrifying and shocking; for when the millions of people are saying, "Merry Christmas", they are literally saying "Merry death of Christ!" Furthermore, when the fat man in the red suit laughs boisterously and says, "Ho ho ho, Merry Christmas", he is mocking and laughing at the suffering and bleeding Saviour, who died for our sins. He does this while parents place their little children into his waiting arms to hear his false promises of gifts that he says he will give them. Consider what you are saying when you say "Merry Christmas."
---
Unfortunately Christmas is even more problematic than Easter.
http://www.simpletoremember.com/media/a/Real-Story-of-X-mas-and-New-Years-b/
---
Did the pilgrims keep Christmas?
http://www.freerepublic.com/focus/f-bloggers/2812597/posts
Do you really need me to provide the source to debunk your guy's assertion that Christians saying "Merry Christmas", are literally saying "Merry death of Christ!""?
Do you really not know the etymology of 'mass'"? Wouldn't it behoove you to know that before agreeing with David J. Meyer, Last Trumpet Ministries International, PO Box 806, Beaver Dam, WI?
Seriously?