The interpretation timeline
Luke 6:43 Douay-Rheims

For there is no good tree that bringeth forth evil fruit; nor an evil tree that bringeth forth good fruit.

A.D. 378 – 1832 6 witnesses 7 excerpts

Patristic

before A.D. 750
378
A.D.
Titus of Bostra Patristic
d. c. A.D. 378
“But take not these words to thyself as an encouragement to idleness, for the tree is moved conformably to its nature, but thou hast the exercise of free will; and every barren tree has been ordained for some good, but thou wert created unto the good work of virtue.”
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“(Hom. 42. in Matt.) For it is a natural consequence when wickedness abounds within, that wicked words are breathed as far as the mouth; and therefore when you hear of a man uttering abominable things, do not suppose that there lies only so much wickedness in him as is expressed in his words, but believe the fountain to be more copious than the stream.”
Source
450
A.D.
d. c. A.D. 450
“(lib. iv. ep. 81.) He does not then exclude repentance, but a continuance in evil, which as long as it is evil cannot bring forth good fruit, but being converted to virtue, will yield abundance. But what nature is to the tree, our affections are to us. If then a corrupt tree cannot bring forth good fruit, how shall a corrupt heart?”
Source
735
A.D.
Bede the Venerable Patristic
c. A.D. 672–735
“Our Lord continues the words which He had begun against the hypocrites, saying, For a good tree bringeth not forth corrupt fruit; i. e. as if He says, If thou wouldest have a true and unfeigned righteousness, what thou settest forth in words make up also in works, for the hypocrite though he pretends to be good is not good, who doeth evil works; and the innocent though he be blamed, is not therefore evil, who doeth good works.”
Source
“The treasure of the heart is the same as the root of the tree. He therefore who has in his heart the treasure of patience and perfect love, brings forth the best fruits, loving his enemy, and doing the other things which have been taught above. But he who keeps a bad treasure in his heart does the contrary to this.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“For every tree is known by its own fruit,.... Good and bad preachers are known by their doctrines, the one being agreeable, the other disagreeable to the word of God; and good and bad men are known by their lives and conversations: the grace of God revealed to good men, and wrought in them, teaches them to live soberly, righteously, and godly; a holy life is the fruit of grace, and an evidence of it; and the wickedness that is in the heart of unregenerate men, and even the hypocrisy of formal professors, will show themselves in the common and ordinary course of their conversations: for of thorns men do not gather figs, nor of a bramble bush gather they grapes; nor can they be expected from them: and no more can an unregenerate man perform good works, or bring forth: fruits of righteousness acceptable unto God; for these require a knowledge of his will, obedience to it, a principle of grace, love to God, faith in Christ, and a view to the glory of God; all which are wanting in such a person.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Corrupt fruit - Καρπον σαπρον, literally, rotten fruit: but here it means, such fruit as is unfit for use. See on Mat 7:17-20 (note).”
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.