9 When, therefore, our Lord Jesus Christ shall come, and, as the Apostle Paul also says, will bring to light the hidden things of darkness, and will make manifest the thoughts of the heart, that every man may have praise from God; then, in presence of such a day, lamps will not be needed: no prophet shall then be read to us, no book of an apostle shall be opened; we shall not require the witness of John, we shall not need the Gospel itself. Accordingly all Scriptures shall be taken out of the way—which, in the night of this world, were as lamps kindled for us that we might not remain in darkness—when all these are taken away, that they may not shine as if we needed them, and the men of God, by whom these were ministered to us, shall themselves, together with us, behold that true and clear light.
Well, what shall we see after these aids have been removed? Wherewith shall our mind be fed? Wherewith shall our gaze be delighted? Whence shall arise that joy which neither eye has seen, nor ear heard, nor has gone up into the heart of man? What shall we see? I beseech you, love with me, by believing run with me: let us long for our home above, let us pant for our home above, let us feel that we are strangers here. What shall we see then? Let the Gospel now tell us: “In the beginning was the Word, and the Word was with God, and the Word was God.”
You shall come to the fountain from which a little dew has already besprinkled you: you shall see that very light, from which a ray was sent aslant and through many windings into your dark heart, in its purity, for the seeing and bearing of which you are being purified. John himself says, and this I cited yesterday: “Beloved, we are the sons of God; and it has not yet appeared what we shall be: we know that, when He shall appear, we shall be like Him, for we shall see Him even as He is.” I feel that your affections are being lifted up with me to the things that are above: but the body, which is corrupt, weighs down the soul; and, the earthly habitation depresses the mind while meditating many things. I am about to lay aside this book, and you too are going to depart, every man to his own house.
It has been good for us to have been in the common light, good to have been glad therein, good to have rejoiced therein; but when we part from one another, let us not depart from Him.
Source: Tractates on the Gospel of John (New Advent)