7 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. 8 And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:
9 Of sin, because they believe not on me;
10 Of righteousness, because I go to my Father, and ye see me no more;
11 Of judgment, because the prince of this world is judged.

John 16:7-11

OF RIGHTEOUSNESS: Jesus proved He was right, and the world was wrong when He rose from the dead and ascended into heaven to sit down at the right hand of God.

“Concerning his Son Jesus Christ our Lord, which was made of the seed of David according to the flesh; And declared to be the Son of God with power, according to the spirit of holiness, by the resurrection from the dead” Rom. 1:3-4

Jesus was made of the seed of David according to the flesh as evidenced by His earthly life, but it was the resurrection from the dead which proved Him to be the Son of God.

You must believe Jesus is right and the world is wrong. Jesus is the only way.