Gregory the Great
Catena Aurea · Matthäusevangelium 25
Then shall the kingdom of heaven be likened unto ten virgins, which took their lamps, and went forth to meet the bridegroom. And five of them were wise, and five were foolish. They that were foolish took their lamps, and took no oil with them: But the wise took oil in their vessels with their lamps. While the bridegroom tarried, they all slumbered and slept. And at midnight there was a cry made, Behold, the bridegroom cometh; go ye out to meet him. Then all those virgins arose, and trimmed their lamps. And the foolish said unto the wise, Give us of your oil; for our lamps are gone out. But the wise answered saying, Not so; lest there be not enough for us and you: but go ye rather to them that sell, and buy for yourselves. And while they went to buy, the bridegroom came; and they that were ready went in with him to the marriage: and the door was shut. Afterward came also the other virgins, saying, Lord, Lord, open to us. But he answered and said, Verily I say unto you, I know you not. Watch therefore, for ye know neither the day nor the hour wherein the Son of man cometh.
(ubi sup.) The lamps of the foolish virgins go out, because the works which appeared outwardly to men to be bright, are dimmed within at the coming of the Judge. That they then beg oil of the wise virgins, what is it but that at the coming of the Judge, when they find themselves empty within, they seek for witness from without? As though deceived by their own self-confidence, they say to their neighbours, Whereas ye see us rejected as living without works, do ye witness to our works that ye have seen.