Ephesians 4:17

¹⁵ But speaking the truth in love, may grow up into him in all things, which is the head, even Christ:

¹⁶ From whom the whole body fitly joined together and compacted by that which every joint supplieth, according to the effectual working in the measure of every part, maketh increase of the body unto the edifying of itself in love.

This I say therefore, and testify in the Lord, that ye henceforth walk not as other Gentiles walk, in the vanity of their mind,

¹⁸ Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart:

¹⁹ Who being past feeling have given themselves over unto lasciviousness, to work all uncleanness with greediness.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: So I tell you this, and insist on it in the Lord, that you must no longer walk as the Gentiles do, in the futility of their thinking.
KJV: This I say therefore, and testify in the Lord, that ye henceforth walk not as other Gentiles walk, in the vanity of their mind,
WEB: This I say therefore, and testify in the Lord, that you no longer walk as the rest of the Gentiles also walk, in the futility of their mind,
ASV: This I say therefore, and testify in the Lord, that ye no longer walk as the Gentiles also walk, in the vanity of their mind,
DARBY: This I say therefore, and testify in [the] Lord, that ye should no longer walk as [the rest of] the nations walk in [the] vanity of their mind,
BLB: This therefore I say and testify in the Lord: You⁺ [are] no longer to walk as also the Gentiles walk, in the futility of their mind,

ÅB: Dette sier jeg da og vitner i Herren at dere ikke lenger skal vandre som hedningene vandrer i sitt sinns tomhet,
OTB: Så sier jeg dette, og bekrefter i Herren, at dere ikke lenger skal leve som hedningene gjør, i deres tankers tomhet.
B1930: Dette sier jeg da og vidner i Herren at I ikke lenger skal vandre som hedningene vandrer i sitt sinns tomhet,

Study notes (Tyndale)

Original text and word study

Cross references

Romans 1:21
Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.
Read in context
1 Peter 4:3–4
For the time past of our life may suffice us to have wrought the will of the Gentiles, when we walked in lasciviousness, lusts, excess of wine, revellings, banquetings, and abominable idolatries:
Read in context
1 Thessalonians 4:1–2
Furthermore then we beseech you, brethren, and exhort you by the Lord Jesus, that as ye have received of us how ye ought to walk and to please God, so ye would abound more and more.
Read in context
Colossians 3:5–8
Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:
Read in context
Ephesians 2:1–3
And you hath he quickened, who were dead in trespasses and sins;
Read in context
2 Peter 2:18
For when they speak great swelling words of vanity, they allure through the lusts of the flesh, through much wantonness, those that were clean escaped from them who live in error.
Read in context
Colossians 2:4
And this I say, lest any man should beguile you with enticing words.
Read in context
1 Peter 1:18
Forasmuch as ye know that ye were not redeemed with corruptible things, as silver and gold, from your vain conversation received by tradition from your fathers;
Read in context