Hear then, my beloved, and open unto me the internal eyes of thy heart and the spiritual perceptions of thy understanding to that which I will say unto thee. Now faith is built up of many things, and is crowned with many colours; it is like unto a building which is built up of many materials, and its fabric mounteth to the top. But know, O my beloved, that stones must be laid in the foundations thereof, and then the whole edifice goeth upwards until it is finished. And thus also must it be with our whole building; its foundation must be the true Rock, which is Jesus Christ our Lord, and upon [this] Rock is faith founded, and upon faith the whole building riseth until it is finished. [This] foundation is the beginning of the whole building, for when a man draweth nigh to faith, he is founded upon the Rock which is our Lord Jesus Christ. And his building will not be washed away by the waves, and it will not be injured by the winds, and it will not fall through storms, because his building riseth upon the rock of the true Rock. And in calling Christ the “Rock” I have not spoken according to my opinion, but the Prophets of old called Him “Rock”, and [this] I will prove to thee.

But for the present listen concerning the faith which is founded upon the Rock, and concerning the building which riseth upon the Rock. First of all a man must believe, and when he hath believed he will love, and when he loveth he will hope, and when he hopeth he will be justified, and when he is justified he will be perfect, and when he is perfect he will be completed; and when his whole building hath risen up, and hath been finished and perfected then will he become a temple for the dwelling-place of Christ, even as the prophet Jeremiah said, “The temple of the Lord, the temple of the Lord, ye are the temple of the Lord if ye make fair your ways and your deeds.” And again it saith in the prophet, “I will dwell in you, and I will walk in you.” And again the blessed Apostle spake thus, “Ye are the temple of God, and the spirit of Christ dwelleth in you.” And our Lord also thus spake to His disciples, “Ye are in Me, and I am in you.“. — Aphraates: On Faith.