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Ephesians 4:29

Major Sins of the Tongue: Corrupt Speech

layers Part 3 of 9 menu_book More on Ephesians lightbulb 22 illustrations in this sermon

Martin expounds Ephesians 4:29 and 5:4 to define and condemn corrupt speech, specifically analyzing the Greek word 'sapros' (rotten, unfit for consumption) as the apostolic standard for all Christian communication. He identifies three specific categories of corrupt speech from Ephesians 5:4 — filthiness or obscenity (bathroom and locker-room coarse talk), foolish talking (moronic, mindless prattle beneath the dignity of image-bearers), and coarse jesting (clever double entendres that traffic in the unclean) — and argues from Calvin that whatever vices are made common by ordinary language and jokes soon become acceptable behavior. Drawing on three cultural evidences (pop music from Elvis to Eminem, TV sitcoms and late-night entertainment, and the Clinton scandal's aftermath among teenagers), Martin demonstrates that corrupt speech is not a peccadillo but a primary engine of moral decay. The sermon closes with a direct pastoral exhortation to children and young people to refuse both the speaking and the hearing of such speech, invoking Calvin's warning that exposure to corrupt companions murders the soul.

Primary Texts

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Ephesians 4:29 Let no corrupt speech proceed out of your mouth — the controlling command from which the entire sermon is developed, defining the standard of edifying, grace-giving speech
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Ephesians 5:3-4 The specific triad of speech sins — filthiness, foolish talking, and coarse jesting — unpacked word-by-word from the Greek as the sermon's primary exegetical focus

Outline 11 sections · 66 min

  1. Introduction and Series Review 0:03
  2. Two Dispositions Toward the Light 10:17
  3. Context of Ephesians 4:29 in Paul's Argument 13:23
  4. The Meaning of 'Sapros': Corrupt Speech Defined 17:40
  5. The Broad Umbrella and the Specific Focus 23:49
  6. First Sin: Filthiness or Obscenity 26:44
  7. Second Sin: Foolish Talking (Morologia) 31:33
  8. Third Sin: Coarse Jesting (Eutrapelia) 36:41
  9. Cultural Observation: How Talk Becomes Behavior 40:48
  10. Exhortation to Children and Young People 52:37
  11. Closing Summary and Benedictory Prayer 64:00

Key Quotes

“The greatest mischief which has been inflicted upon Christianity has not arisen from tyrants with persecution, murder and pride against the word, but from that little bit of flesh which resides between the jaws.”
“All three terms refer to a dirty mind expressing itself in a dirty way. This kind of language must be avoided as utterly inappropriate among those whom God has set apart as holy.”
“What is made the stuff of ordinary and acceptable language and the subjects of jokes and banter is soon the stuff of acceptable behavior.”
“A fundamental ingredient of the soul in maintaining a holy walk in an unholy context is the maintaining of a deep sense of moral revulsion in the presence of that which displeases God.”
“For as a man thinks in his heart, so is he. And out of the abundance of the heart, the mouth speaks. Therefore, the apostle says, let no corrupt, foul, putrid communication proceed out of your mouth.”
“It is necessary that offenses come. In a sinful world, people are going to sin and find occasions to sin. But he said this, but woe to him through whom the offense comes. It were better for him that a millstone were hanged about his neck and he were drowned in the sea.”
“Why then do we long to have our souls murdered, which is much worse? Wherefore, let us keep far from such people as can do nothing but quench and put out the fear of God in us and make us shameless and hard-hearted and rob us of all honesty and shame.”
“Let no corrupt communication proceed out of your mouth. By analogy, let no unnecessary corrupt communication proceed into your ears.”

Applications

Parents & families

  • Children and young people should refuse to spread dirty words or coarse jokes to others, remembering that Jesus said it would be better to be drowned in the sea than to become the occasion of putting moral poison into another person's mind.
  • Young people should determine by grace to harness the tongue for God's use — no dirty words, no dirty jokes, no mindless tomfoolery — and disregard peer pressure from those who mock holiness as being 'too good.'

All listeners

  • Believers in whom corrupt speech is a remaining sin must trace it to its roots and bring the dynamics of gospel grace upon it, just as was prescribed for the sin of lying in the previous sermon.
  • A person who consistently resists preaching on specific sins of the tongue should take that resistance as a serious diagnostic sign about the true state of their soul before God.
  • Christians must understand that their words function as the diet of the minds and hearts of those who hear them — only that which nourishes and builds up is to proceed from the mouth.
  • Abusive speech, slander, gossip, vindictive speech, sarcasm, needling, and taunting all fall under the apostolic prohibition on corrupt speech and must be actively put to death.
  • All bathroom and locker-room coarse talk — slang terms for private bodily functions, body parts, and sexual activity — is absolutely prohibited for believers at any time or in any circumstances.
  • Speech should be directed toward the five divinely given purposes: carrying on the business of life, refreshing others, helping by instruction and comfort, and highest of all praising God — when devoted to these ends in suitable proportions, believers need not fear sinning with the tongue.
  • Coarse jesting — the ability to turn any conversation toward the ribald or suggestive with clever double entendres — is forbidden among the people of God as part of their alternate lifestyle as the new humanity in Christ.
  • Believers must guard against any speech habit or entertainment choice that dulls the sense of moral revulsion toward what displeases God, because once that revulsion is broken down through language, the body follows.
  • Believers should refuse to allow corrupt speech into their souls through the ears when they have a choice — choosing friends, music, and media that do not traffic in obscenity, foolish talking, or coarse jesting.
  • Where believers cannot avoid hearing corrupt speech (the workplace, certain academic settings), they should pray for divine immunization against its permanent influence; where they do have a choice (friends, music, films), they must exercise it with the discipline of new men and women in Christ.
  • Do not choose media, music, or companions that will dull your ability to feel God's antipathy toward uncleanness — the capacity for moral revulsion is itself a precious spiritual faculty to be protected.

A full transcript is available on the tab. 119 paragraphs, roughly 66 minutes.

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