We do not deny the legitimacy or the authority of a council or a pope when we say that a doctrine taught by either, which clearly contradicts what has been defined infallibly, cannot be accepted. Another act of Divine Providence that cannot be ignored is the fact that the very popes of Vatican II assured us that nothing that proceeds from Vatican II, as such, is endowed with the attribute of infallibility. Therefore, again, whatever contradicts what has been infallibly taught before, cannot be accepted. And then He promised that their teaching will be confirmed with signs and miracles. True to His word, throughout history, God has provided signs and miracles to confirm the truth and authority of His Church.
Christian history is made by miracles.
Without the miracles of the Resurrection and of Pentecost, there would be no Church. Perhaps the most spectacular miracle in all history is the miracle of the sun at Fatima, in 1917. Together with that sign, a demand was made which has not yet been fully complied with. History was made when a miraculous sign was shown to the Emperor Constantine and he was asked to put the symbols of the Redemption on the banners of his army. Constantine was still a pagan and so were a great majority of his army.