The Roles of the Holy Spirit of God
Jesus is the Mediator between God an men. The Holy Spirit of God Father and of Yehoshua (Jesus) Messiah (Christ) YAHWEH (the LORD, the Lord) is our Ambassador to God Father and to Jesus and our Educator, our Professor..
To enable men to recognize Jesus as Jehovah
Wherefore I make known unto you, that no man speaking in the Spirit of God saith, Jesus is anathema; and no man can say, Jesus is Lord [YHWH], but in the Holy Spirit. 1 Corinthians 12:3 ASV
(13) Ye call me, Teacher, and, Lord [YAHWEH]: and ye say well; for so I am. John 13:13 ASV
yet to us there is one God, the Father, of whom are all things, and we unto him; and one Lord, Jesus Christ, through whom are all things, and we through him. 1 Corinthians 8:6 ASV
To translate the prayers of the holy to the holy God
(26) And in like manner the Spirit also helpeth our infirmity: for we know not how to pray as we ought; but the Spirit himself maketh intercession for us with groanings which cannot be uttered; (27) and he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God. Romans 8:26-27 ASV
To represent Father and Jesus in our body
(16) Know ye not that ye are a temple of God, and that the Spirit of God dwelleth in you? (17) If any man destroyeth the temple of God, him shall God destroy; for the temple of God is holy, and such are ye. 1 Corinthians 3:16-17 ASV
(19) Or know ye not that your body is a temple of the Holy Spirit which is in you, which ye have from God? and ye are not your own; (20) for ye were bought with a price: glorify God therefore in your body. 1 Corinthians 6:19-20 ASV
To sanctify (make holy) man every day
But we are bound to give thanks to God always for you, brethren beloved of the Lord, for that God chose you from the beginning unto salvation in sanctification of the Spirit and belief of the truth: 2 Thessalonians 2:13 ASV
that I should be a minister of Christ Jesus unto the Gentiles, ministering the gospel of God, that the offering up of the Gentiles might be made acceptable, being sanctified by the Holy Spirit. Romans 15:16 ASV
The Holy Spirit substitutes for Jesus and witnesses Him to His imitators
The Holy Spirit has been substituting for Jesus since His ascension. He takes instructions from Jesus to transmit them to the imitators of Jesus to bear witness of Jesus so that we can also bear witness of Jesus. Therefore, no one can dream of Jesus or of any Angel from God in any way, shape, or form.
John 16:13-14 ASV
(13) Howbeit when he, the Spirit of truth, is come, he shall guide you into all the truth: for he shall not speak from himself; but what things soever he shall hear, these shall he speak: and he shall declare unto you the things that are to come. (14) He shall glorify me: for he shall take of mine, and shall declare it unto you.
John 15:26-27 ASV
(26) But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall bear witness of me:
(27) and ye also bear witness, because ye have been with me from the beginning