Expositor's Bible Commentary Commentary John 16:8

"And he, when he is come, will convict the world in respect of sin, and of righteousness, and of judgment:" — John 16:8 (ASV)

Three major aspects of the ministry of the Holy Spirit are described in vv.8– 15: (1) to the world—conviction of sin, righteousness, and judgment (vv.8–11); (2) to the disciples—direction and truth (vv.12–13); (3) to Jesus—revealing him more perfectly to and through those who represent him (vv.14–15).

(1) The key to this first aspect is the word “convict” (GK 1794). The word is a legal term that means to pronounce a judicial verdict by which the guilt of the culprit is defined and fixed. The Spirit not only accuses people of sin, he brings to them an inescapable sense of guilt so that they realize their shame and helplessness before God. This conviction applies to three particular areas: (a) sin, (b) righteousness, and (c) judgment.

(a) The Spirit is the prosecuting attorney who presents God’s case against humanity. He creates an inescapable awareness of sin so that it cannot be dismissed with an excuse or evaded by taking refuge in the fact that “everybody is doing it.” The Spirit’s function is like that of Nathan the prophet, who said to David, “You are the man” (2 Samuel 12:7), and convicted him of his misdeeds. David acknowledged his sin in a state of complete penitence (2 Samuel 12:15; Psalms 51:4).

The essence of sin is unbelief (v.9), which is not simply a difference of opinion; rather, it is a total rejection of God’s messenger and message. A court can convict a person of murder, but only the Spirit can convict him or her of unbelief. Jesus insists that sin is fundamentally repudiation of his message and his mission.