Many supporters of Opus Dei believe the Jesuits hold a grudge against Opus Dei borne of jealousy and ideological differences. Richard John Neuhaus said: "The opposition to Opus Dei cannot be explained without at least some reference to jealousy. Competition and jealousy among religious movements in the Catholic Church is nothing new, and some Opus Dei members are not hesitant to suggest that theirs is now the role in the Church once played by the Jesuits. The Jesuits, who were once viewed as the elite corps of the papacy, have in recent decades had a sharply attenuated relationship to the hierarchical leadership of the Church. The famous "fourth vow" of allegiance to the pope is now frequently understood by Jesuits as a vow to the papacy in general---meaning the papacy as they think it ought to be."