I myself, since becoming a Christian, have never been real comfortable with Christmas; but I think that has more to do with the way it is done, as to whether we should or not. I believe God sees what is in our heart when we come together with family and friends to celebrate His birth.
From the passages below, I would have to venture it is possible to do something that even though it is in His name, that it
still is not God's Will. I would venture further to say it
is a matter of whether we do it or not. What do you think?
Mat 7:21 Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Mat 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
Mat 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
But the Holy day that has always meant a lot to me as a Christian is easter, for this is when He rose from the dead. If He had not done that, Christianity would be just another religion.
The fact that Jesus died for all of the world's sins does make Christianity unique (and thank God that he did!).
I pose the question as to why easter, though? It was hard for me to find references to it from the early church (of the Apostles day) and they appear not to observe it...
(please note that I did find the below scripture with the word 'easter' (in the KJV), but if you will look at the original Greek, it does appear to refer to Passover.)
Act 12:4 And when he had apprehended him, he put [him] in prison, and delivered [him] to four quaternions of soldiers to keep him; intending after Easter(Greek:pasha) to bring him forth to the people.
Lexicon Results for pascha (Strong's 3957)
4) the paschal feast, the feast of the Passover, extending from the 14th to the 20th day of the month Nisan