And when he is come, he will reprove the world of sin, and of righteousness, and of judgment:
Note 76 at Joh 16:8: It is the ministry of the Holy Spirit to reprove of sin, righteousness, and judgment. It is not our ministry. We are simply witnesses (Joh 15:27 and Ac 1:8). Witnesses are not the judge or the jury. They simply testify of what they have seen or what has happened to them.
In their zeal, some people have gone beyond the witness stage and tried themselves to bring people under conviction. This is assuming a job that belongs to the Holy Spirit alone. This not only frustrates the witness, but it also drives many people away from God. We make a very poor Holy Spirit; therefore, we should stick to our job of being witnesses and let the Holy Spirit do His.