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)