This was already answered prior to your post!!! MARK was not using the terms as you stated, as he said, "Thanks for that Kyle. I know not Greek." He further stated, "We use" xmass" in England as an abbreviation for the Roman Catholic practice of "christmas"btw." His intent of using the term "X" was not based on his knowledge of Greek, but rather his acceptance of Catholic theology. Thus, your argument for his defense has no basis.