“O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh.”
My Notes
What Does Matthew 12:34 Mean?
Jesus addresses the Pharisees with scorching language: generation of vipers. Then explains why they cannot speak good things: the mouth speaks what fills the heart. The evil speech is evidence of evil hearts.
"Out of the abundance of the heart the mouth speaketh" is one of the most diagnostic statements Jesus makes. Your words are not random. They are overflow. Whatever fills the heart eventually spills out of the mouth.
"A good man out of the good treasure of the heart bringeth forth good things" — the good treasure produces good speech. "An evil man out of the evil treasure bringeth forth evil things" — the evil treasure produces evil speech. The mouth is a faucet. The heart is the reservoir.
Jesus connects the internal condition to the external expression absolutely. If you want to change what comes out of your mouth, you must change what fills your heart. The mouth is the symptom. The heart is the cause.
Reflection Questions
- 1.What does your unguarded speech reveal about what fills your heart?
- 2.How is the mouth a 'faucet' and the heart a 'reservoir'?
- 3.What 'treasure' — good or evil — is currently filling your heart in abundance?
- 4.How do you change the overflow by changing the source?
Devotional
Out of the abundance of the heart the mouth speaketh. Your words are not accidents. They are overflow. Whatever is in your heart in abundance is what comes out of your mouth. The speech reveals the source.
How can ye, being evil, speak good things? The question is rhetorical. You cannot. An evil heart cannot produce good speech any more than a polluted spring can produce clean water. The output matches the source.
A good man out of the good treasure bringeth forth good things. If the heart is filled with good treasure — truth, love, grace, wisdom — good things come out. The overflow is good because the reservoir is good.
An evil man out of the evil treasure bringeth forth evil things. If the heart is filled with bitterness, gossip, malice, or self-centeredness — that is what overflows. The words reveal the filling.
The diagnostic is simple: listen to what you say. Not what you plan to say or what you wish you said. What actually comes out — in anger, in unguarded moments, in conversation you do not curate. That is the overflow of your heart.
What does your mouth reveal about what fills your heart? The words are the evidence. The heart is the source. And only a change in the source can change the overflow.
Commentary
Trusted original commentary from respected historical Bible scholars and theologians.
But he answered and said unto them,.... Not to the Pharisees, who were unworthy of an answer from him; having, in such…
O generation of vipers! - Christ here applies the argument which he had suggested in the previous verse. They were a…
In these verses we have,
I. Christ's glorious conquest of Satan, in the gracious cure of one who, by the divine…
generation of vipers Cp. ch. Mat 3:7.
abundance The same Greek word is translated, "that which was left," Mar 8:8. Words…
Cross References
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