The Sunday homily of Fr. Ryan Erlenbush, on the unique nature of the Church.
When Jesus says that "the gates of the nether world shall not prevail against it", he means to tell us that the powers of hell will prevail against every other reality (every philosophy, ideology, nation, power, etc) excepting insofar as it is united to the Church. The Church alone will overcome the gates of hell. Only in the Church can men hope to find salvation.