debate rage? How many times do people need to be told that these things aren't a secular "attack" on Christianity. Both come from England centuries ago. The X in the abbreviation Xmas is the Greek letter Chi, not the Roman X. It's the first letter in Christ, when it's spelled out in Greek. Happy Holidays was a greeting formulated during the reformation when many Puritans were against the celebration of a mass for Christ's birth, but there were also several other holy days and the New Year going on during the season.