This reminds me of a question I've had floating around my brain for years now - O Come O Come Emmanuel has always seemed to be about WAITING for the Messiah, not having the Messiah already on Earth... so isn't in rather more of a Jewish song than a Christian one? I mean no disrespect to either faith, I ask from ignorance; I thought that a major difference was whether you thought that the Messiah had come (Christian) or was yet to come (Jew), so why is a song about wanting Him to come considered a Christmas carol? Really only curious!