Theophylact of Ohrid
Catena Aurea · Lukasevangelium 12
Let your loins be girded about, and your lights burning; And ye yourselves like unto men that wait for their lord, when he will return from the wedding; that when he cometh and knocketh, they may open unto him immediately. Blessed are those servants, whom the lord when he cometh shall find watching: verily I say unto you, that he shall gird himself, and make them to sit down to meat, and will come forth and serve them. And if he shall come in the second watch, or in the third watch, and find them so, blessed are those servants. And this know, that if the goodman of the house had known what hour the thief would come, he would have watched, and not have suffered his house to be broken through. Be ye therefore ready also: for the Son of man cometh at an hour when ye think not.
Our Lord having taught His disciples moderation, taking from them all care and conceit of this life, now leads them on to serve and obey, saying, Let your loins be girded, that is, always ready to do the work of your Lord, and your lamps burning, that is, do not lead a life in darkness, but have with you the light of reason, shewing you what to do and what to avoid. For this world is the night, but they have their loins girded, who follow a practical or active life. For such is the condition of servants who must have with them also lamps burning; that is, the gift of discernment, that the active man may be able to distinguish not only what he ought to do, but in what way; otherwise men rush down the precipice of pride. But we must observe, that He first orders our loins to be girded, secondly, our lamps to be burning. For first indeed comes action, then reflection, which is an enlightening of the mind. Let us then strive to exercise thevirtues, that we may have two lamps burning, that is, the conception of the mind ever shining forth in the soul, by which we are ourselves enlightened, and learning, whereby we enlighten others.