"The innovators have been challenged several times to produce a text of Sacred Scripture which would prove the existence of the invisible church they invented, and we are unable to obtain any such text from them. How could they adduce such a text when, addressing His Apostles whom He left as the propagators of His Church, Jesus said: "You cannot be hidden" [Matt 5:14].
Thus He has declared that the Church cannot help but be visible to everyone. The Church has been at all times, and will forever be, necessarily visible, so that each person may always be able to learn from his pastor the true doctrine regarding the dogmas of faith, to receive the Sacraments, to be directed in the way of salvation, and to be enlightened and corrected should he ever fall into error. "

St. Alphonsus D. Ligouri