(3) And when he is come, he will (a) reprove the (b) world of sin, and of righteousness, and of judgment:
(3) The Spirit of God works so mightily by the preaching of the word that he forces the world, whether or not it wants to, to confess its own unrighteousness and Christ's righteousness and almightiness.
(a) He will so reprove the world, that those of the world will not be able to give any excuse.
(b) He refers to the time that followed his ascension, when as all those opposed were manifestly reproved, through the pouring out of the Holy Spirit upon the Church: so that the very enemies of Christ were reproved of sin, in that they were forced to confess that they were deceived, in that they believed not, and therefore they said to Peter in (Acts 2:37), "Men and brethren, what shall we do?