@GWH In the New Testament the term "comforter" doesn't mean what we think of "comforter" today. The key point is this: in the New Testament, a comforter is not primarily someone who soothes sorrow but someone who stands beside you as your legal advocate. The Greek term paraklētos—traditionally rendered “Comforter”—refers to a figure summoned to one’s side in a judicial setting, a defender who speaks on behalf of the accused and secures their vindication. In the ancient world, this was the role of a court‑advocate, not a therapist. When Jesus promises the coming of the paraklētos in John’s Gospel, he is describing the Spirit as the one who argues the believer’s case, exposes the world’s false judgment, and upholds the truth of Christ. The Spirit “comforts” not by mere emotional support but by defending, testifying, and securing the believer’s standing before God and the world. Recovering this legal dimension restores the sharpness of the term: the Comforter is our advocate in the divine courtroom.
Yes, and per John 16:7-16 the Holy Spirit's roles include convicting souls of sin, righteousness and judgment/condemnation and guiding Christians into all spiritual truth/God's Word. Jesus indicated that he would be seen by his disciples when they received the Holy Spirit, which would be revealed following his resurrection and ascension on the day of Pentecost per Acts 1:4-2:4.
This is why I apply John 3:30 regarding the relationship of John and Jesus to this relationship between angels and the Holy Spirit.