No good tree bears bad fruit, nor does a bad tree bear good fruit.
Berean Standard Bible · CC0
Greek — tap a word ↓
gar estin Ou kalon dendron poioun sapron karpon oude palin sapron dendron poioun kalon karpon
The Fallible · Synthetic · Study Bible
A Tree and Its Fruit
Luke 6:43–45 — A Tree and Its Fruit. Each verse below carries the full apparatus: the Berean Standard Bible, the vocalized original (tap any word), and a parsed breakdown of every term transcribed from the interlinear. Synthesized commentary, canonical threads, and the reading of Christ gather at the end, over the whole unit.
No good tree bears bad fruit, nor does a bad tree bear good fruit.
Berean Standard Bible · CC0
Greek — tap a word ↓
gar estin Ou kalon dendron poioun sapron karpon oude palin sapron dendron poioun kalon karpon
For each tree is known by its own fruit. Indeed, figs are not gathered from thornbushes, nor grapes from brambles.
Berean Standard Bible · CC0
Greek — tap a word ↓
gar hekaston dendron ginōsketai ek tou idiou karpou gar ou syka syllegousin ex akanthōn oude trygōsin staphylēn ek batou
The good man brings good things out of the good treasure of his heart, and the evil man brings evil things out of the evil treasure of his heart. For out of the overflow of the heart the mouth speaks.
Berean Standard Bible · CC0
Greek — tap a word ↓
ho agathos anthrōpos propherei agathon to ek tou agathou thēsaurou tēs autou kardias kai ho ponēros propherei to ponēron ek tou ponērou gar ek perisseumatos kardias autou to stoma lalei
The verse-by-verse work is done. What follows gathers the whole unit. All three layers below are machine-generated (⚙). Weigh them; they have no authority.
AI synthesis — woven from the public-domain voices above and the original text; generated and fallible.
⚙ Luke's γάρ (“for”) ties the tree saying to the warning against judging (6:37 to 42). The Geneva note draws the line plainly: “Skill in reprehending others does not make a good man.” Benson reads the whole passage as a test of the critic: “a man is known to be either good or bad by his words,” especially when he passes judgment on others. Ellicott (v. 45) fills in the fruit itself: the good treasure yields “kindness, gentleness, compassion,” the evil one “harsh surmises, and uncharitable condemnation.” Gill notes that Matthew uses the same images of false prophets (Matt 7:15 to 20), while in Luke they seem to apply to true believers and hypocrites.
The Greek is built on symmetry: a καλὸν (sound) tree does not produce σαπρόν (rotten) fruit, “nor again” the reverse. The present participle ποιοῦν describes what a tree characteristically is. Poole makes the figure explicit: “The heart of man is made the root,” and outward actions are “the imperate acts of the heart and of the will.” The Pulpit Commentary guards the saying against Manichaean dualism: the text does not teach two fixed races of men, only that “if he would do good he must first be good.” Verse 44 states the rule of recognition (γινώσκεται, “is known”) and grounds it in common sight: figs and grape clusters do not come from thorns and brambles. Ellicott notices that Luke uses a second, vintage verb (τρυγῶσιν) and that βάτος is the word for the burning bush. Gill draws the hard conclusion: “no more can an unregenerate man perform good works.”
Here the image is translated. The tree becomes ὁ ἀγαθὸς ἄνθρωπος; its root becomes the θησαυρὸς τῆς καρδίας, the heart's storehouse; its fruit becomes speech. The final clause names the mechanism: the mouth speaks ἐκ περισσεύματος, out of what the heart can no longer hold. Henry states it as a sober rule of thumb: “what the mouth commonly speaks, generally agrees with what is most in the heart.” Barnes notes that this verse appears in Matthew not in the Sermon on the Mount but at 12:35, and Cambridge sets it beside Matthew 12:34 (“how can ye, being evil, speak good things?”) and Isaiah 32:6. ⚙ The unit therefore ends not with a technique for better speech but with a diagnosis: change what is stored, and the overflow changes.
⚙ Read with Scripture alone and offered to be tested: Jesus is not giving the judging disciple a tool for sorting others, but a mirror. The saying follows directly on the beam in one's own eye, and its last word is about the mouth that speaks from his heart. The fruit test is real (6:44), yet it is turned first on the one who would use it. The text also refuses moralism: if rotten fruit comes from a rotten tree, more effort on the fruit will not help. What is needed is a good tree, and Jesus has just said (as Luke 18:19 will repeat) that goodness in the full sense belongs to God. The passage thus presses the hearer toward the new heart God promises (Ezekiel 36:26) and toward the next verses, where the only sound foundation is hearing and doing the words of the Lord (6:46 to 49). This reading is a fallible synthesis; the cross references to Luke 18:19 and Ezekiel 36:26 are my connections, not the commentators'.
Jesus does not hand the critic a tool for sorting trees; he holds up a mirror to the one holding the shears.
AI-generated connections. Each carries a verification badge with a recorded basis; contested links are flagged.
Luke 6:43 to 44 runs closely parallel to Matthew 7:16 to 18. Ellicott notes the difference in pairing: in Matthew grapes come with thorns and figs with thistles; Luke pairs figs with thorns and a grape cluster with the bramble. The shared rare word σταφυλή (grape cluster) and the identical frame of kalos tree, karpos, and dendron make this a confirmed verbal parallel within the synoptic tradition. In Matthew the saying targets false prophets; in Luke it follows the warning against judging (Gill).
Matthew 7:16 · Matthew 7:17 · Matthew 7:18
basis: Verifier: Matthew 7:16 shares G4718 σταφυλή (in 3 vv, rare) and G2590 καρπός (in 56 vv); Matthew 7:17 and 7:18 share G2590 καρπός (56 vv), G1186 δένδρον (18 vv), G2570 καλός (90 vv). Synoptic parallel of the same saying.
Luke 6:45 has its closest parallel in Matthew 12:34 to 35, where Jesus answers the charge that he casts out demons by Beelzebul. Barnes and Ellicott both point there; Cambridge quotes “O generation of vipers, how can ye, being evil, speak good things?” The rare noun περίσσευμα (4 verses) is shared, together with ponēros and laleō. In Matthew the saying exposes the Pharisees' slander of Jesus; in Luke it exposes the censorious critic.
Matthew 12:33 · Matthew 12:34 · Matthew 12:35
basis: Verifier: Matthew 12:34 shares G4051 περίσσευμα (in 4 vv, rare), G4190 πονηρός (72 vv), G2980 λαλέω (273 vv); Matthew 12:33 shares G2590 καρπός (56 vv), G1186 δένδρον (18 vv), G2570 καλός (90 vv). Parallel saying in a different setting.
Ellicott observes that Luke's second verb, τρυγάω, is the technical word for gathering the vintage, the word used in Revelation 14:18 to 19, where the angel gathers the clusters (σταφυλή) of the vine of the earth for the winepress of God's wrath. Both words are very rare in the NT (3 verses each). ⚙ The verbal link is real; any deliberate allusion between Luke and Revelation is not claimed. Read canonically, it is sobering: the fruit by which a tree is known now is the fruit that will be harvested at the end.
Revelation 14:18 · Revelation 14:19
basis: Verifier: Revelation 14:18 shares G5166 τρυγάω (in 3 vv) and G4718 σταφυλή (in 3 vv); Revelation 14:19 shares G5166 τρυγάω (3 vv). Shared rare vocabulary, not a quotation or proven allusion.
James 3:10 to 12 applies the same logic to speech: blessing and cursing should not come from one mouth, any more than a fig tree yields olives or a vine figs. The shared rare σῦκον (4 verses) and the shared subject (the mouth revealing the source) make this a strong thematic link. ⚙ Many readers hear James echoing the teaching of Jesus here, but James does not cite it, so no quotation is claimed.
James 3:12
basis: Verifier: shared G4810 σῦκον (in 4 vv); shared motif of fruit-from-source applied to speech; no citation, so not tiered as quotation.
Ellicott points out that βάτος (bramble) is the word Luke uses for the burning bush in 20:37 and that Acts 7:30, 35 uses it the same way, following the Greek of Exodus 3:2 to 4. The lexical fact is secure. Whether Luke intends any resonance (the worthless bramble here, the bush where God revealed his name there) is not said by any source in the brief and may be coincidence of vocabulary.
Luke 20:37 · Acts 7:30 · Acts 7:35 · Exodus 3:2
basis: Verifier: shared G942 βάτος (in 5 vv) with Luke 20:37, Acts 7:30, 7:35. The link to Exodus 3:2 is cross-Testament (Ellicott via the LXX; no shared Strong's possible). Lexical link real; theological resonance unattested.
Cambridge sets Isaiah 32:6 beside v. 45: the fool speaks folly and the vile person villainy, because the heart works iniquity. The connection is the same principle (speech flows from the heart's character) in a prophetic description of the false leader whom the righteous king will replace (Isa 32:1). Because Isaiah is Hebrew and Luke Greek, no shared Strong's lexeme can be computed.
Isaiah 32:6
basis: Cited by Cambridge on Luke 6:45; cross-Testament (Hebrew to Greek), so no shared Strong's basis; shared motif of speech revealing a corrupt heart, not a quotation.
⚙ Jeremiah 17:7 to 10 joins the same three ideas as this unit: the one who trusts the LORD is a tree planted by water that does not cease to bear fruit (17:8); the heart is deceitful above all things (17:9); and the LORD searches the heart to give each according to “the fruit of his doings” (17:10). This is my own connection, not drawn from the commentators in the brief; it is cross-Testament and therefore tiered structural.
Jeremiah 17:8 · Jeremiah 17:9 · Jeremiah 17:10
basis: ⚙ Tool's own cross-Testament link (Hebrew to Greek; no shared Strong's possible): shared pattern of tree, fruit and heart; no quotation claimed.
AI-generated reading; weigh it against the text.
⚙ If only a good tree bears good fruit, the question becomes how a rotten tree is made good. Gill answers that believers are “trees of righteousness” (Isa 61:3), “rooted in Christ, and filled with the fruits of righteousness by him.” Henry prays that “the word of Christ be so grafted in our hearts, that we may be fruitful in every good word and work.” Jesus himself later names the source: “I am the vine, you are the branches; apart from me you can do nothing” (John 15:5), and Paul names the fruit as “the fruit of the Spirit” (Gal 5:22). That fruit comes from union with Christ is the widely held reading of the church.
John 15:5 · Isaiah 61:3 · Galatians 5:22
⚙ Verse 45 locates the problem in the storehouse, not the mouth. The prophets promised the remedy: a new heart and a new spirit (Ezek 36:26), the law written on the heart (Jer 31:33). Paul presents these promises as fulfilled through Christ in the new covenant (2 Cor 3:3, 6). The Pulpit Commentary notes that the saying does not mean anything is “irrevocably fixed in men's natures”; ⚙ the gospel's answer is that the heart can be changed, by God's act and not by effort on the fruit. This new-covenant reading is widely held.
Ezekiel 36:26 · Jeremiah 31:33 · 2 Corinthians 3:3
⚙ Luke has already shown the crowd marveling at “the gracious words that came from his mouth” (Luke 4:22), and Peter says of Christ that “no deceit was found in his mouth” (1 Pet 2:22, from Isa 53:9). Read together with v. 45, Jesus is the one man whose heart's treasure was wholly good, so that his words were wholly good. The sinlessness of Christ is ancient doctrine; applying this verse to him directly is my own reading and is offered as such.
Luke 4:22 · 1 Peter 2:22 · Isaiah 53:9
The biblical text is the Berean Standard Bible (BSB), public domain (CC0). Hebrew/Greek text, transliteration, morphology and Strong’s are transcribed from the Berean interlinear (CC0) + Strong’s lexicons (PD); the literal renderings, divergence notes, word notes and all synthesis are this tool’s own work (⚙) — fallible; verify them.
Named voices, quoted verbatim from public-domain works:
Text. The Greek follows the brief's interlinear; its word order lists γάρ and ἐστιν before Οὐ in v. 43 and ἀγαθόν before τὸ in v. 45, an artifact of the alignment; the literal renderings follow the natural Greek order. In v. 44 the interlinear gloss for οὐ (index 9) is a placeholder (“vvv”); the negation is folded into “are not gathered.” Gill reports that several ancient versions omit “for” in v. 43 and “his” in v. 45; both are present in the Greek printed here, and the brief gives no manuscript apparatus to test this further.
Sources. Barnes and JFB give only cross references for this unit; Poole's entries for vv. 44 and 45 point to an unrelated passage (“Mark 1:16”), apparently a transmission error, so Poole is cited only from v. 43. Henry's comment covers 6:37 to 49 as a whole. The prickly pear in Cambridge and the Pulpit Commentary is a later introduction to the region (see note on v. 44). Ellicott's “Sinai” for the burning bush follows the common identification of Horeb with Sinai.
Synthesis. Threads to Jeremiah 17 and the christological readings citing John 15, Ezekiel 36, Luke 4:22 and 1 Peter 2:22 are ⚙ connections made by this tool, offered to be tested. Lexeme frequencies are the Verifier's NT counts.
✦ = human, public-domain source, quoted and named. ⚙ = machine synthesis, to be verified. Flagged cross-references are left visible on purpose — the verifier working in the open. “Search the Scriptures daily, whether those things were so.” (Acts 17:11)