When he comes, he will prove the world to be in the wrong about sin and righteousness and judgment:
NIV
And when He comes, He will convict and convince the world and bring demonstration to it about sin and about righteousness (uprightness of heart and right standing with God) and about judgment:
AMP
And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:
KJV
He must hold firmly to the trustworthy message as it has been taught, so that he can encourage others by sound doctrine and refute those who oppose it.
NIV
He must hold fast to the sure and trustworthy Word of God as he was taught it, so that he may be able both to give stimulating instruction and encouragement in sound (wholesome) doctrine and to refute and convict those who contradict and oppose it [showing the wayward their error].
AMP
Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.
KJV
Have nothing to do with the fruitless deeds of darkness, but rather expose them.
NIV
Take no part in and have no fellowship with the fruitless deeds and enterprises of darkness, but instead [let your lives be so in contrast as to] expose and reprove and convict them.
AMP
And have no fellowship with the unfruitful works of darkness, but rather reprove them.
KJV
There is a judge for those who reject me and do not accept my words; the very words I have spoken will condemn them at the last day.
NIV
Anyone who rejects Me and persistently sets Me at naught, refusing to accept My teachings, has his judge [however]; for the [very] message that I have spoken will itself judge and convict him at the last day.
AMP
He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day.
KJV
Those whom I love I rebuke and discipline. So be earnest, and repent.
NIV
Those whom I [dearly and tenderly] love, I tell their faults and convict and convince and reprove and chasten [I discipline and instruct them]. So be enthusiastic and in earnest and burning with zeal and repent [changing your mind and attitude]. [Prov. 3:12.]AMP
As many as I love, I rebuke and chasten: be zealous therefore, and repent.
KJV
"To judge everyone, and to convict all the ungodly of all the ungodly acts they have done in an ungodly way, and of all the defiant words ungodly sinners have spoken against him."
NIV
To execute judgment upon all and to convict all the impious (unholy ones) of all their ungodly deeds which they have committed [in such an] ungodly [way], and of all the severe (abusive, jarring) things which ungodly sinners have spoken against Him.
AMP
To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against him.
KJV
So whatever you believe about these things keep between yourself and God. Blessed are those who do not condemn themselves by what they approve.
NIV
Your personal convictions [on such matters]--exercise [them] as in God's presence, keeping them to yourself [striving only to know the truth and obey His will]. Blessed (happy, to be envied) is he who has no reason to judge himself for what he approves [who does not convict himself by what he chooses to do].
AMP
Hast thou faith? have it to thyself before God. Happy is he that condemneth not himself in that thing which he alloweth.
KJV
One witness is not enough to convict anyone accused of any crime or offense they may have committed. A matter must be established by the testimony of two or three witnesses.
NIV
One witness shall not prevail against a man for any crime or any wrong in connection with any sin he commits; only on the testimony of two or three witnesses shall a charge be established.
AMP
One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.
KJV