John 16:9

Of sin, because they believe not on me.
] The "sin" here primarily intended, is that of the Jews, in disbelieving, rejecting, and crucifying Christ; and which the Spirit of God, by Peter, charged upon them on the day of "Pentecost", and fully proved against them; gave such clear evidence, and wrought such strong convictions of in their minds and consciences, that being pricked to the heart, they cried out, "what shall we do?" ( Acts 2:23 Acts 2:36 Acts 2:37 ) ; though as this passage may be applied to the ordinary work of the Spirit of God upon the souls of men, through the ministry of the word; so it may take in convictions of sin of all sorts, as of original and actual sins, and particularly the sin of unbelief: for the Spirit of God convinces of the sinfulness and corruption of nature, the wickedness and plague of a man's heart, the sin that dwells in him; how that has overspread all the powers and faculties of his soul, rendered both him and his services unacceptable to God, loathsome in his sight, and himself hopeless and helpless, and deserving of his wrath and displeasure: he also convinces of actual sins and transgressions, showing that they are breaches of the law of God, and are committed against God himself; that they are deserving of death, even eternal death; that the wrath of God is revealed against them, and for them comes upon the children of disobedience; and that there is no atonement for them, or cleansing from them, but by the blood of Christ: he likewise convinces of the sin of unbelief, here particularly mentioned: showing the evil nature and consequences of it, to persons enjoying a Gospel revelation; that such who disbelieve the Messiah, shall die in their sins; that whoever believes not in him shall be damned; and that faith in Christ is necessary to salvation, and that without it there is none.