Jesus said that the job of the Holy Spirit is to teach us about sin and judgment to come..

"Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.

And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:" John 16:7-8