(Resource: Bible Hub for Eph. 5:6 )
Gill’s Exposition of the Entire Bible
Let no man deceive you with vain words,… With vain philosophy, vain babblings, with foolish and filthy talking; suggesting that these were not sinful the apostle had condemned; or that they were small sins, the frailties of human life; and that God would take no notice of them, and they might continue in them with impunity: such deceivers there were, doctrinal and practical ones, who lay in wait to deceive men with such vain pretences; and there was danger of being carried away with their error; for the heart is deceitful and desperately wicked, and is easily taken in such snares: wherefore the apostle cautions against such deceptions, adding,…
Expositor’s Greek Testament
Ephesians 5:6. let no one deceive you with vain words. A solemn warning, made the more pointed by being given without any connecting particle. κενός is “vain” in the sense of empty,
without the substance of truth or reality, and so = sophistical; cf. κενολογεῖν in Isaiah 8:19.
Jamieson-Fausset-Brown Bible Commentary
- vain—empty, unreal words, namely, palliations of “uncleanness,” (to make an offense seem less serious) Eph 5:3, 4; Isa 5:20 (that it is natural to indulge in love), “covetousness” (that it is useful to society that men should pursue gain), and “jesting” (that it is witty and clever, and that God will not so severely punish for such things).
—When people say that it is ‘natural’ to indulge in love/sex or anger - it really is ‘natural’, but as in carnal/animal. I wasn’t lied to when I was told ‘sex is natural’ (or when I defended having sex to others), but the error/deception lay in my equating ‘natural’ with ‘spiritual’. The spiritual part of sex is very narrow - like the Catholic Church used to teach, for procreation only within marriage. And as St. Paul addresses, and I finally took seriously.