If Catholics can validly argue that Protestants should not interpret the Bible without the authority of the Church, then why can’t Jews just as validly argue that Christians should not interpret the Old Testament without the authority of Rabbinic Judaism?
A Christian can argue that the Old Testament prophesied Jesus, and that the Jews rejected those prophecies, but this presupposes that the Apostles got the correct interpretation of the Old Testament. The Apostles, however, were not Scribes or Rabbis, so they had no credentials that would make them authoritative interpreters of the Old Testament. Thus, if a pagan in the 1st century were to determine “Divine Truth” by credentials alone, he would be more likely to accept the mainstream Jewish (i.e. Pharisee) interpretation of the Old Testament (that is, that the Old Testament does NOT prophesy Jesus.) than he would for a minority Messianic Jewish sect’s interpretations.
So, I question the validity of the Infallible Interpreter argument on the grounds that it seems to be more compelling of an argument for Judaism against Christianity than it is for Catholicism against Protestantism.