Origen

“ Many then will say to the Saviour, “Thou art the Christ, the Son of the living God;” but not all who say this will say it to Him, as not at all having learned it by the revelation of flesh and blood but by the Father in heaven Himself taking away the veil that lay upon their heart, in order that after this “with unveiled face reflecting as a mirror the glory of the Lord” [6] they may speak through the Spirit of God saying concerning Him, “Lord Jesus,” and to Him, “Thou art the Christ, the Son of the living God.” ”

“ Now, if the gates of Hades prevail against any one, such an one cannot be a rock upon which Christ builds the church, nor the church built by Jesus upon the rock; for the rock is inaccessible to the serpent, and it is stronger than the gates of Hades which are opposing it, so that because of its strength the gates of Hades do not prevail against it; but the church, as a building of Christ who built His own house wisely upon the rock, [11] is incapable of admitting the gates of Hades which prevail against every man who is outside the rock and the church, but have no power against it. ”