What does Jesus mean by a good tree not bringing forth corrupt fruit?

Jesus uses a simple picture from nature. A healthy tree does not keep producing rotten fruit, and a diseased tree does not keep producing good fruit. He is saying that a person’s real inner life will show itself over time. A heart that has been shaped by God will not make a steady habit of evil, even though it may still stumble. A heart that remains unchanged and corrupt will not produce a life of real obedience, no matter what it claims on the outside.

How are people known by their fruits in this passage?

Jesus says, “Every tree is known by his own fruit.” Just like you recognize a tree by what grows on it, you recognize a person by the pattern of their life and words. It is not about one moment but the usual course of their actions. A life that shows love, obedience, and honesty points to a heart where God’s grace is at work. A life marked by ongoing sin, harshness, or hypocrisy shows that the heart has not been changed, even if the person has religious talk.

What is the “good treasure” and “evil treasure” of the heart?

Jesus speaks of the heart like a storehouse or treasure chest. Over time, thoughts, desires, and habits are stored up there. A “good treasure” is a heart filled with truth, faith, love, and a desire to please God. From that, good words and actions come out. An “evil treasure” is a heart full of unbelief, selfishness, and sin. From that, harmful words and deeds come. The idea is that what we have been storing inside will sooner or later come out in how we live and speak.

What does “out of the abundance of the heart his mouth speaketh” mean?

This saying explains why our words matter so much. “Abundance” means what is most filling and overflowing in the heart. Jesus is saying that our mouths naturally spill what we are full of inside. We might hide our thoughts for a while, but over time what we love, fear, and believe will come out in how we talk. This does not mean people never pretend, but it does mean that our regular speech is like a window into our inner life, showing what is really important to us.

How does this teaching relate to hypocrisy and judging others?

Just before this, Jesus warned about seeing a speck in someone else’s eye while ignoring the beam in our own. Then he talks about trees and fruit and the heart’s treasure. Put together, he is saying we should first look at our own hearts and lives instead of focusing on other people’s faults. If we claim to be good while living in sin or harshly attacking others, our fruit shows our claim is empty. Real goodness starts with a changed heart that then shows in humble, honest living.

Does this passage teach that true believers never sin?

This passage does not say that a good person never sins at all. Instead, it speaks about the usual pattern of life, like the normal fruit from a tree. Those who belong to God still struggle with sin, but they do not make sin their steady practice or way of life. Over time their lives show growing obedience and desire to please God. On the other hand, a person who is content to keep living in sin, without repentance, shows that their heart remains like a corrupt tree.

How should believers apply “known by their fruits” to teachers and leaders?

This teaching can be used to weigh those who claim to speak for God. Titles, gifts, and fine words are not enough. We are to look at the “fruit” of their teaching and life. Does what they teach match what Jesus says? Does their life show holiness, humility, and obedience, or does it show greed, pride, and disobedience? While we cannot see hearts, we are allowed and even expected to pay attention to this visible fruit instead of being led by appearances alone.

How can I examine my own heart in light of this passage?

You can start by honestly asking what your regular words and actions say about what is inside. Look at how you speak when you are angry, stressed, or unguarded. Notice what you keep choosing when no one is watching. Then bring what you see before God, asking him to show you your heart and to change what is wrong. Filling your heart with God’s Word, prayer, and obedience is like storing up good treasure, so that, over time, what comes out of you is more and more like Christ.

Luke.6.43

Luke 6:43

KJV Jesus

For a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit.

A Tree and Its Fruit

43 For a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit.

For every tree is known by his own fruit. For of thorns men do not gather figs, nor of a bramble bush gather they grapes.

A good man out of the good treasure of his heart bringeth forth that which is good; and an evil man out of the evil treasure of his heart bringeth forth that which is evil: for of the abundance of the heart his mouth speaketh.

Cross References

No cross references available for this verse.