Ephesians 4:29 (BSB)

Let no unwholesome talk come out of your mouths, but only what is helpful for building up the one in need and bringing grace to those who listen.

From Ephesians 4. Also in the ESV.

Commentary on Ephesians 4:29

• John Calvin (Reformed), Calvin's Commentaries on Ephesians 4:29: 29. No filthy speech. He first forbids believers to use any filthy language, including under this name all those expressions which are wont to be employed for the purpose of inflaming lust. Not satisfied with the removal of the vice, he enjoins them to frame their discourse for edification.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Ephesians 4:17-32: The apostle having gone through his exhortation to mutual love, unity, and concord, in the foregoing verses, there follows in these an exhortation to Christian purity and holiness of heart and life, and that both more general (Eph 4:17-24) and in several particular instances, Eph 4:25-32.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Ephesians 4:29: And be ye kind one to another,.... Good, affable, courteous; which appears in looks, words, and actions; by looking pleasantly on each other, speaking kindly to one another, and mutually doing every good office that lies in their way, and in their power: tender hearted: which is opposed to a being hard hearted to them that are in distress, and close at hand to the...
• Albert Barnes (Presbyterian), Barnes' New Testament Notes on Ephesians 4:29: Verse 29. Let no corrupt communication proceed. . The word rendered "corrupt" σαπρος means bad, decayed, rotten, and is applied to putrid vegetables or animal substances. Then it is applied to a tree is of a useless character, that produces no good fruit, .