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Consider the following quote (… if it's not too long 
) :
"The coming of the Comforter is once more announced by Him. He could not come unless the Lord departed. He is to be sent to His own and when He comes He will make a great demonstration to the world. The word “reprove” in John 16:8 is incorrect; the Greek word is difficult to express in its full meaning. Some have translated it by “rebuke,” others use the word “convince” or “convict.” The word “demonstrate” seems to be the nearest to the original. “And when He is come He will bring demonstration to the world of sin, and of righteousness and of judgment.” The presence of the Holy Spirit in believers is the proof to the world that the whole world is guilty of the death of Christ; the whole world is under sin and therefore not on probation but under condemnation. The Holy Spirit is also the demonstration to the world of righteousness. This does not mean that He brings righteousness to the world, or makes the world righteous, as so many erroneously believe. Our Lord adds: “Of righteousness, because I go to my Father and ye see me no more.” The Holy One was rejected by the world, cast out as an unrighteous One. But He, Who owned and satisfied God’s righteousness in dying as the substitute of sinners, is now exalted to the right hand of God; there He is the witness of righteousness. The presence of the Holy Spirit on earth demonstrates this fact. God raised Him from the dead and gave Him glory; the world sees Him no more as a Saviour personally on earth; but will see Him again as Judge, when He comes to judge the world in righteousness. Righteousness is fully displayed in the glory, where He is. The hope of righteousness is to be with Him there. (Galatians 5:5.) The Holy Spirit also brings demonstration to the world of judgment “because the prince of this world is judged.” Sentence of judgment is pronounced against Satan, but not yet executed. He is the god of this age, but he was judged in His Cross. Judgment must come upon the world and its prince. The Holy Spirit now present upon the earth in the believers demonstrates this fact."
--Gaebelein, Commentary on John 16 (source: Bible Hub)
[end quoting]
https://biblehub.com/greek/1651.htm
) :"The coming of the Comforter is once more announced by Him. He could not come unless the Lord departed. He is to be sent to His own and when He comes He will make a great demonstration to the world. The word “reprove” in John 16:8 is incorrect; the Greek word is difficult to express in its full meaning. Some have translated it by “rebuke,” others use the word “convince” or “convict.” The word “demonstrate” seems to be the nearest to the original. “And when He is come He will bring demonstration to the world of sin, and of righteousness and of judgment.” The presence of the Holy Spirit in believers is the proof to the world that the whole world is guilty of the death of Christ; the whole world is under sin and therefore not on probation but under condemnation. The Holy Spirit is also the demonstration to the world of righteousness. This does not mean that He brings righteousness to the world, or makes the world righteous, as so many erroneously believe. Our Lord adds: “Of righteousness, because I go to my Father and ye see me no more.” The Holy One was rejected by the world, cast out as an unrighteous One. But He, Who owned and satisfied God’s righteousness in dying as the substitute of sinners, is now exalted to the right hand of God; there He is the witness of righteousness. The presence of the Holy Spirit on earth demonstrates this fact. God raised Him from the dead and gave Him glory; the world sees Him no more as a Saviour personally on earth; but will see Him again as Judge, when He comes to judge the world in righteousness. Righteousness is fully displayed in the glory, where He is. The hope of righteousness is to be with Him there. (Galatians 5:5.) The Holy Spirit also brings demonstration to the world of judgment “because the prince of this world is judged.” Sentence of judgment is pronounced against Satan, but not yet executed. He is the god of this age, but he was judged in His Cross. Judgment must come upon the world and its prince. The Holy Spirit now present upon the earth in the believers demonstrates this fact."
--Gaebelein, Commentary on John 16 (source: Bible Hub)
[end quoting]
https://biblehub.com/greek/1651.htm
