"But I tell you the truth, it is to your advantage that I go away; for if I do not go away, the Helper shall not come to you; but if I go, I will send Him to you. And He, when He comes, will convict the world concerning sin, and righteousness, and judgment; concerning sin, because they do not believe in Me; and concerning righteousness, because I go to the Father, and you will no longer behold Me; and concerning judgment, because the ruler of this world has been judged." (John 16:7-11)
"In instructing His disciples regarding the coming of the Holy Spirit, Jesus said " . . . for if I do not go away, the Helper shall not come to you; but if I go I will send Him to you. And He, when He comes, will . . . " :
01) Convict men of the sin of unbelief (John 16:9).
02) Convict men that Jesus is the righteousness of God (John 16:10 and
Romans 10:3,4).
03) Convict men that the power of Satan has been broken (John 16:11).
04) Regenerate the believer (John 3:5 & Titus 3:5).
05) Indwell the believer (1 Corinthians 6:19, 20).
06) Seal the believer (Ephesians 1:13, 14).
07) Baptize the believer (Acts 1:5 & 1 Corinthians 12:13).
08) Infill the believer (Ephesians 5:18).
09) Empower the believer (Acts 1:8)
10) Lead the believer (Galatians 5:16-18)
11) Administer spiritual gifts to the believer (1 Corinthians 12:1-11).
The Holy Spirit came on the day of Pentecost, to remain with the church until it is complete and presented to the Lord Jesus at His coming. Just as Jesus Christ finished the work He came to do in the flesh, so the Holy Spirit will finish the work He came to do in the church."
(This is From : Bible Foundation Course Lesson 04- 05)