The interpretation timeline
Luke 12:35 Douay-Rheims

Let your loins be girt, and lamps burning in your hands.

A.D. 253 – 1871 12 witnesses 19 excerpts

Patristic

before A.D. 750
253
A.D.
Origen Patristic
c. A.D. 184–253
“For He will be girded about His loins with righteousness.”
395
A.D.
Gregory of Nyssa Patristic
c. A.D. 335–395
“(ubi sup.) For the sake then of keeping watch, our Lord advised above that our loins should be girded, and our lamps burning, for light when placed before the eyes drives away sleep. The loins also when tied with a girdle, make the body incapable of sleep. For he who is girt about with chastity, and illuminated by a pure conscience, continues wakeful.”
Source
420
A.D.
Maximus of Turin Patristic
d. c. A.D. 420
“Or, he teaches us to keep our lamps burning, by prayer and contemplation and spiritual love.”
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“(de Qu. Ev. lib. ii. q. 25.) Or, He teaches us also to gird our loins for the sake of keeping ourselves from the love of the things of this world, and to have our lamps burning, that this thing may be done with a true end and right intention.”
444
A.D.
A.D. 376–444
“Or, to be girded, signifies activity and readiness to undergo evils from regard to Divine love. But the burning of the lamp signifies that we should not suffer any to live in the darkness of ignorance.”
“Now consider that He comes from the wedding as from a festival, which God is ever keeping; for nothing can cause sadness to the Incorruptible Nature.”
604
A.D.
Gregory the Great Patristic
c. A.D. 540–604
“(Hom. 13. in Evang.) Or else, we gird our loins when by continence we control the lusts of the flesh. For the lust of men is in their loins, and of women in their womb; by the name of loins, therefore, from the principal sex, lust is signified. But because it is a small thing not to do evil, unless also men strive to labour in good works, it is added, And your lamps burning in your hands; for we hold burning lamps in our hands, when by good works we shew forth bright examples to our neighbours.”
Source
“(ubi sup.) For He comes when He hastens to judgment, but He knocks, when already by the pain of sickness He denotes that death is at hand; to whom we immediately open if we receive Him with love. For he who trembles to depart from the body, has no wish to open to the Judge knocking, and dreads to see that Judge whom he remembers to have despised. But he who rests secure concerning his hope and works, immediately opens to Him that knocks; for when he is aware of the time of death drawing near, he grows joyful, because of the glory of his reward; and hence it is added, Blessed are the servants whom the Lord when he cometh shall find watching. He watches who keeps the eyes of his mind open to behold the true light; who by his works maintains that which he beholds, who drives from himself the darkness of sloth and carelessness.”
Source
“(Hom. 13. in Ev.) By which He girds Himself, that is, prepares for judgment.”
“(Hom. 13. in Ev.) But He is said to be passing over, when He returns from the judgment to His kingdom. Or the Lord passes to us after the judgment, and raises us from the form of His humanity to a contemplation of His divinity.”

Scholastic

c. 1100 – 1500
1107
A.D.
c. 1055–1107
“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 the virtues, 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.”
Source
“Daily also in the heavens He betroths the souls of the Saints, whom Paul or another offers to Him, as a chaste virgin. (2 Cor 11:2.) But He returns from the celebration of the heavenly marriage, perhaps to all at the end of the whole world, when He shall come from heaven in the glory of the Father; perhaps also every hour standing suddenly present at the death of each individual.”
Source
“That is, Give back to them, as it were, an equal return, that as they served Him, so also He will serve them.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And ye yourselves like unto men that wait for their Lord,.... Who either was at a wedding, or was the bridegroom himself; so be ye in a readiness, waiting for the coming of Christ, the bridegroom of the church: when he will return from the wedding, The Syriac version renders it, "from the house of feasting"; from any entertainment, or from the marriage feast, or rather the marriage itself, to the bride chamber: so when Christ has, by the preaching of the Gospel, and the power of his grace, espoused all his elect, he will descend from heaven, and take them to himself; they shall then be called to the marriage supper of the Lamb, and enter with him into the nuptial chamber, and be for ever with him: that when he cometh and knocketh, they may open to him immediately; and let him in without any delay, as soon as ever he comes to the door; and at the first knock, open it to him at once, having light, and being in a posture of readiness, and in constant expectation of him: so such who have believed in Christ, and have been faithful to his cause and interest, and have held fast the profession of their faith without wavering, when Christ shall either come and knock at their doors by death, or shall come to judgment, and sound the alarm of it, they shall be ready to obey the summons with the greatest cheerfulness, and meet him with the utmost pleasure.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Let your loins - Be active, diligent, determined ready; let all hinderances be removed out of the way; and let the candle of the Lord be always found burning brightly in your hand. See on Luk 12:37 (note).”
1849
A.D.
1774–1849
“Let your loins be girded; i.e. be prepared to walk in the way of virtue; a comparison taken from the custom of the eastern people, who girded up their long garments, when they went about any business. (Witham) — After our divine Saviour had given his disciples such excellent instructions, he wishes to lead them still farther in the path of perfection, by telling them to keep their loins girt, and to be prepared to obey the orders of their divine Master. By lamps burning in their hands he wished to insinuate, that they were not to pass their lives in obscurity, but to let their lights shine before men. (Theophylactus)”
Source
1863
A.D.
1796–1863
“As the Orientals wore long garments, they used girdles, especially when any work was to be undertaken, or any service to be performed. Servants waiting for the return of their master, had their loins girt.”
“" In your hands." These words are not in the Greek.”
1871
A.D.
1871
“loins . . . girded--to fasten up the long outer garment, always done before travel and work (Kg2 4:29; Act 12:8). The meaning is, Be in readiness. lights, &c.--(See on Mat 25:1).”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.