Nevertheless I tell you the trut; 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: of sin, because they believe not on Me; of righteousness, because I go to My Father, and ye see Me no more; of judgment, because the prince of this world is judged.              John 16:7-11

Jesus giving one of His final teachings to His disciples, in this teaching is teaching them of the work of the Holy Spirit. He must go away first; that is He must go to the cross and die for our sins, be buried, rise again and then ascend up to glory with His Father.

His work is three fold; this probably not meant to be exhaustive;

1. Reprove the world of sin;
2. Reprove the world of righteousness; and
3. Reprove the world of judgment.

He is the Comforter to those who have believed and received Him. He fills the believer with the righteousness of Christ who is actually Christ in us. He also is our assurance, our peace in the midst of any judgment or trial, and by Him we are sealed until the day of redemption.

Believe Him today.