I. The first point of thought suggested here, is the ground on which the charge is founded "of sin, because they believe not on Me."
II. Note the way in which the Comforter, by revealing Christ, answers the cry for forgiveness, and for power to become righteous. "He shall convince the world of righteousness because I go to the Father." It is not Christ crucified only, but Christ risen and ascended, who reveals a righteousness for man. Three of man's necessities the assurance of forgiveness of the past, the removal of the terrors of the future, the creation of a new manhood in the present are all met by the truth that Christ has gone to the Father; and when that is revealed by the Comforter, we have the conviction of righteousness.
E. L. Hull, Sermons,2nd series, p. 14.
References: John 16:8-11. Spurgeon, Sermons,vol. xxix., No. 1708; Contemporary Pulpit,vol. vii., p. 286; Homiletic Quarterly,vol. v., p. 484.John 16:9. J. Vaughan, Sermons,11th series, pp. 205, 213.