(From the Greek "anti Christou" = the one against Christ [reoccurring]) in the letters of John of the New Testament is the name for concrete individual persons who stand against Christ and his liberating message - for example as a false teacher. The church fathers and medieval theologians strove for a unified concept of the Antichrist and saw his personification in the enemies of the church (such as Emperor Nero). For their part, the Reformers described the Pope as the Antichrist.