7 But men continually say to themselves, “Lo, the day of judgment is coming now, so many evils are happening, so many tribulations thicken; behold all things which the Prophets have spoken, are nearly fulfilled; the day of judgment is already at hand.” They who speak thus, and speak in faith, go out as it were with such thoughts to “meet the Bridegroom.” But, lo! war upon war, tribulation upon tribulation, earthquake upon earthquake, famine upon famine, nation against nation, and still the Bridegroom comes not yet. Whilst then He is expected to come, all they who are saying, “Lo, He is coming, and the Day of Judgment will find us here,” fall asleep. Whilst they are saying this, they fall asleep. Let each one then have an eye to this his sleep, and persevere even unto his sleep in love; let sleep find him so waiting. For suppose that he has fallen asleep. “Will not He who falls asleep afterwards rise again?” Therefore “they all slept;” both of the wise and the foolish virgins in the parable, it is said, “they all slept.”
8. “Lo, at midnight there was a cry made.” What is, “at midnight”? When there is no expectation, no belief at all of it. Night is put for ignorance. A man makes as it were a calculation with himself: “Lo, so many years have passed since Adam, and the six thousand years are being completed, and then immediately according to the computation of certain expositors, the Day of Judgment will come;” yet these calculations come and pass away, and still the coming of the Bridegroom is delayed, and the virgins who had gone to meet him sleep. And, lo, when He is not looked for, when men are saying, “The six thousand years were waited for, and, lo, they are gone by, how then shall we know when He will come?” He will come at midnight. What is, “will come at midnight”? Will come when you are not aware. Why will He come when you are not aware of it? Hear the Lord Himself, “It is not for you to know the times or the seasons which the Lord has put in His own power.” “The day of the Lord,” says the Apostle, “will come as a thief in the night.” Therefore watch by night that you be not surprised by the thief. For the sleep of death— will you, or nill ye— it will come.
9. “But when that cry was made at midnight.” What cry was this, but that of which the Apostle says, “In the twinkling of an eye, at the last trump”? “For the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed”? And so when the cry was made at midnight, “Behold, the Bridegroom comes;” what follows? “Then all those virgins arose.” What is, “they” all arose? “The hour will come,” said the Lord Himself, “when all that are in the graves shall hear His voice, and shall come forth.” Therefore at the last trumpet they all arose. “Now those wise virgins had brought oil with them in their vessels; but the foolish brought no oil with them.” What is the meaning of “brought no oil with them in their vessels”? What is “in their vessels”? In their hearts. Whence the Apostle says, “Our glorying is this, the testimony of our conscience.” There is the oil, the precious oil; this oil is of the gift of God. Men can put oil into their vessels, but they cannot create the olive. See, I have oil; but did you create the oil? It is of the gift of God. You have oil. Carry it with you. What is “carry it with you”? Have it within, there please God.
Source: Sermons on Selected Lessons of the New Testament (New Advent)