Biblion Bible Commentary
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By Your Words You Will Be Justified
Matthew 12:33-37
33 “Either make the tree good and its fruit good, or make the tree corrupt and its fruit corrupt; for the tree is known by its fruit. · WEB
The tree and its fruit applied to speech — because what a person says under no pressure is the most honest evidence there is.
"Either make the tree good and its fruit good, or make the tree corrupt and its fruit corrupt; for the tree is known by its fruit" Matthew 12:33.
The image returns from the sermon Matthew 7:16–20 and is applied to what has just happened. The accusation about Beelzebul was fruit, and it came off a tree.
The demand in the sentence is for consistency: choose. A person cannot claim a good tree and produce that, and the objectors have been trying to hold both — devout in reputation, murderous in intention Matthew 12:14.
"You offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart, the mouth speaks" Matthew 12:34.
The insult is John's, word for word, and it was aimed at the same party at the Jordan Matthew 3:7. The diagnosis under it is the sermon's throughout: speech is not the problem but the symptom, and the mouth overflows with whatever the heart is full of.
That is why the section belongs here rather than being a change of subject. Their words about the exorcism were not a debating position; they were a readout.
"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.
The word treasure is the sermon's again Matthew 6:21, and the storeroom metaphor is exact: what comes out of a house is a fair inventory of what is in it, and nobody produces at short notice what they have not stored.
"I tell you that every idle word that men speak, they will give account of it in the day of judgment" Matthew 12:36.
The idle word is the surprise. Not the blasphemy, not the perjury — the careless remark, said without weighing it, which is precisely why it is such good evidence. A prepared statement shows what a person wants to be thought; an unguarded one shows what is in the storeroom.
"For by your words you will be justified, and by your words you will be condemned" Matthew 12:37.
The closing sentence is not a doctrine of salvation by speech, in a Gospel that has just said every blasphemy may be forgiven. It is a statement about evidence at a hearing: words are admitted as testimony about the person who said them, because they came from somewhere. What the Pharisees said in this chapter will be read back to them, and it will not need interpreting.
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