For certain individuals whose condemnation was written about long ago have secretly slipped in among you. They are ungodly people, who pervert the grace of our God into a license for immorality and deny Jesus Christ our only Sovereign and Lord.
NIV
For certain men have crept in stealthily [gaining entrance secretly by a side door]. Their doom was predicted long ago, ungodly (impious, profane) persons who pervert the grace (the spiritual blessing and favor) of our God into lawlessness and wantonness and immorality, and disown and deny our sole Master and Lord, Jesus Christ (the Messiah, the Anointed One).
AMP
For there are certain men crept in unawares, who were before of old ordained to this condemnation, ungodly men, turning the grace of our God into lasciviousness, and denying the only Lord God, and our Lord Jesus Christ.
KJV
Having lost all sensitivity, they have given themselves over to sensuality so as to indulge in every kind of impurity, and they are full of greed.
NIV
In their spiritual apathy they have become callous and past feeling and reckless and have abandoned themselves [a prey] to unbridled sensuality, eager and greedy to indulge in every form of impurity [that their depraved desires may suggest and demand].
AMP
Who being past feeling have given themselves over unto lasciviousness, to work all uncleanness with greediness.
KJV
I am afraid that when I come again my God will humble me before you, and I will be grieved over many who have sinned earlier and have not repented of the impurity, sexual sin and debauchery in which they have indulged.
NIV
[I am fearful] that when I come again, my God may humiliate and humble me in your regard, and that I may have to sorrow over many of those who sinned before and have not repented of the impurity, sexual vice, and sensuality which they formerly practiced.
AMP
And lest, when I come again, my God will humble me among you, and that I shall bewail many which have sinned already, and have not repented of the uncleanness and fornication and lasciviousness which they have committed.
KJV
Coveting (a greedy desire to have more wealth), dangerous and destructive wickedness, deceit; unrestrained (indecent) conduct; an evil eye (envy), slander (evil speaking, malicious misrepresentation, abusiveness), pride (the sin of an uplifted heart against God and man), foolishness (folly, lack of sense, recklessness, thoughtlessness).
AMP
For you have spent enough time in the past doing what pagans choose to do – living in debauchery, lust, drunkenness, orgies, carousing and detestable idolatry.
NIV
For the time that is past already suffices for doing what the Gentiles like to do--living [as you have done] in shameless, insolent wantonness, in lustful desires, drunkenness, reveling, drinking bouts and abominable, lawless idolatries.
AMP
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:
KJV