“But the Comforter, the Holy Spirit whom the Father will send in My name, He shall teach you all things, and bring all things to your remembrance, whatever I have said to you.” John 14:26
“And when the Comforter has come, whom I will send to you from the Father, the Spirit of truth who proceeds from the Father, He shall testify of Me.” John 15:26
The focal point of the ministry of the Holy Spirit is to bring to remembrance and teach the Church all that Jesus said, and to bear witness to His Word. All this is directed toward establishing a mature Church ( The Overcomer ), which is the Body of Christ, of which Jesus is the head.
“And when that One comes, He will convict the world concerning sin, and concerning righteousness, and concerning judgment.” John 16:8
The mission of the Holy Spirit is to convict the world of sin that they might repent and be saved; not to condemn the world. This is being accomplished by the Church, as they present the “good news.”
The Holy Spirit also convicts of righteousness. The one who is convicted of sin and repents becomes an empty vessel, which needs to be filled with the righteousness of God. Then finally, He convicts the world of judgment, which is a preparation for the second coming of the Lord Jesus Christ.