Origen
Catena Aurea · Matthäusevangelium 24
Watch therefore: for ye know not what hour your Lord doth come. But know this, that if the goodman of the house had known in what watch the thief would come, he would have watched, and would not have suffered his house to be broken up. Therefore be ye also ready: for in such an hour as ye think not the Son of Man cometh.
The master of the household is the understanding, the house is the soul, the thief is the Devil. The thief is also every contrary doctrine which enters the soul of the unwary by other than the natural entrance, breaking into the house, and pulling down the soul’s natural fences, that is, the natural powers of understanding, it enters the breach, and spoils the soul. Sometimes one takes the thief in the act of breaking in, and seizing him, stabs him with a word, and slays him. And the thief comes not in the day-time, when the soul of the thoughtful man is illuminated with the Sun of righteousness, but in the night, that is, in the time of prevailing wickedness; in which, when one is plunged, it is possible, though he have not the power of the sun, that he may be illuminated by some rays from the Word, as from a lamp; continuing still in evil, yet having a better purpose, and watchfulness, that this his purpose should not be broken through. Or in time of temptation, or of any calamities, is the time when the thief is most found to come, seeking to break through the house of the soul.