The interpretation timeline
Mark 9:2 Douay-Rheims

And his garments became shining and exceeding white as snow, so as no fuller upon earth can make white.

A.D. 253 – 1832 4 witnesses 5 excerpts

Patristic

before A.D. 750
253
A.D.
Origen Patristic
c. A.D. 184–253
“(in Matt. tom. xii. 39) Or else, fullers upon earth may by a moral interpretation be considered to be the wise of this world, who are thought to adorn even their foul understandings and doctrines with a false whitening drawn from their own minds. But their skill as fullers cannot produce any thing like a discourse which shews forth the brightness of spiritual conceptions in the unpolished words of Scripture, which by many are despised.”
Source
735
A.D.
Bede the Venerable Patristic
c. A.D. 672–735
“(in Marc. 3, 37) Our Saviour then when transfigured did not lose the substance of real flesh, but shewed forth the glory of His own or of our future resurrection; for such as He then appeared to the Apostles, He will after the judgment appear to all His elect. It goes on, And his raiment became shining.”
“(ubi sup.) And by the garments of the Lord are meant His saints, who will shine with a new whiteness. By the fuller we must understand Him, to whom the Psalmist says, (Ps. 51) Wash me throughly from my wickedness, and cleanse me from my sin; for He cannot give to His faithful ones upon earth that glory which remains laid up for them in heaven.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And after six days,.... Six days after this discourse with his disciples, in their way to Caesarea Philippi, and after they were come into those parts: Jesus taketh with him Peter, James, and John; favourite disciples, and a sufficient number, to be witnesses of his transfiguration: and leadeth them up into an high mountain apart by themselves; where he and they were alone. This was not Mount Tabor, as is generally said, but either the mountain which Caesarea was at the foot of, or it may be Mount Lebanon; See Gill on Mat 17:1; and he was transfigured before them; the above three disciples; See Gill on Mat 17:2.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“And after six days Jesus taketh with him Peter, etc. - For a full account of the nature and design of the transfiguration, see on Mat 17:1 (note), etc. A high mountain - I have conjectured, Mat 17:1, that this was one of the mountains of Galilee: some say Hermon, some Tabor; but Dr. Lightfoot thinks a mountain near Caesarea Philippi to be more likely. Was transfigured - Four good MSS. and Origen add here, And While They Were Praying he was transfigured; but this appears to be added from Luk 9:29.”
Source
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.