…as a Catholic I think that Luther was deeply mistaken. But I also understand that if you take theology seriously, as something with real cognitive content, then it will by its very nature exclude certain beliefs while entailing others. Thus, the Catholic Church affirms that Protestant denominations, like the Lutherans, are not real churches. That judgment inexorably follows from the Catholic belief in apostolic succession.
Not surprisingly, Baptists do not accept infant baptisms as legitimate, Judaism believes that the Christian doctrine of the Trinity is unbiblical, Eastern Orthodoxy forbids its people from receiving the Eucharist at churches in communion with Rome, Muslims deny that Jesus is the Son of God, and the Orthodox Presbyterian Church, “believes that the popish sacrifice of the mass is most abominably injurious to Christ’s one, only sacrifice, the alone propitiation for all the sins of His elect.”
It is not clear what Mr. [Joshua] Green expects to find when he investigates the churches, synagogues, or mosques of political figures. In a nation of serious believers who are citizens of a government committed to religious freedom and other basic liberties, why does it surprise Mr. Green to find that differing religious points of view should arise and that the advocates of those views would issue doctrinal statements that are at points critical in nature?