Matthew 12:35 teaches that what comes out of a person reveals what is stored up inside them. A good person draws good things from a good inner store, and a person with a corrupt heart produces evil, so the quality of your speech and actions tracks the quality of your heart. Jesus says this to the Pharisees and scribes who have just accused him of working by the power of Beelzebul and who are now asking him for a sign.
The good man out of his good treasure brings out good things, and the evil man out of his evil treasure brings out evil things.
Matthew 12:35 (WEB)
What Matthew 12:35 Means
The verse uses the image of a treasure stored within a person. The word “treasure” points to the inner life: the thoughts, desires, habits and loyalties a person has gathered over time. When the verse says a good man “brings out” good things, it pictures someone reaching into a storeroom and taking out what is already there. Nothing is manufactured on the spot. What appears in conversation, in choices and in reactions is what has been accumulating in the heart.
The verse does not say that a good person is perfect or that a bad person can never say anything true or kind. Jesus is describing the general direction of a life. It also does not promise that outward goodness will earn God’s favor by itself, since the surrounding passage makes clear that the heart matters more than the performance. What the verse does offer is a diagnosis: the fruit tells you something about the root, and the words you speak are a window into what you have been storing.
The Context of Matthew 12:35
Matthew’s Gospel was written for a community that knew the Jewish scriptures well and needed to understand who Jesus was in relation to them. Traditionally the book is attributed to Matthew, one of the twelve disciples, though most scholars date the final text to the latter part of the first century. Its early readers were probably a mix of Jewish and Gentile Christians, and the Pharisees and scribes in this scene represent the religious leaders who opposed Jesus.
The verses just before this one, in 12:33 and 34, set up the logic. Jesus says a tree is known by its fruit and then calls his hearers a brood of vipers, asking how they can speak good things when they are evil. Verse 35 explains why: “out of the abundance of the heart the mouth speaks.” After verse 35 comes verse 36, where Jesus warns that people will give account for every careless word. Read in that sequence, verse 35 is not a comfortable observation about personality. It is a sober point about accountability, aimed at people whose words were revealing hostility toward him.
Key Phrases in Matthew 12:35
Proverbs 4:23
Keep your heart with all diligence, for out of it is the wellspring of life.
(WEB)
This verse urges readers to guard their hearts with all diligence because everything that flows from life comes from it. It echoes the teaching of Matthew 12:35 that the heart is the source of what a person says and does, and it adds a practical call to watch over that source carefully.
Luke 6:45
The good man out of the good treasure of his heart brings out that which is good, and the evil man out of the evil treasure of his heart brings out that which is evil, for out of the abundance of the heart, his mouth speaks.
(WEB)
Luke records a parallel saying in which a good person brings good out of the good treasure of the heart, and the mouth speaks from the overflow. Reading it alongside Matthew 12:35 shows that Jesus taught this principle more than once and reinforces the link between inner store and outward speech.
A Short Prayer From Matthew 12:35
Lord, you see what I have been storing up in my heart, even the parts I would rather hide from others. Search me and show me the treasures that are not yours. Fill me with your truth, your patience and your love, so that when I speak and act, what comes out of me honors you. Forgive the careless words I have spoken, and help me guard my heart with care. Make my heart good through your grace, I pray. Amen.
