Most Christians have never heard of the Quartodecimans, but this was not some tiny church argument over nothing. This was one of the earliest major controversies in post-apostolic Christianity, and it centered on a serious question: Should the church remember Christ’s Passover on the actual biblical date of Passover, Nisan 14, or should it move the observance to Sunday?The word Quartodeciman comes from the Latin for “fourteenth.” That is why some people call it “14ism.” These were believers who