The work of the Holy Spirit in this age began at Pentecost when He came from the Father as promised by Christ (John 14:16-17; 15:26) to initiate and complete the building of the Body of Christ, which is His church (1 Corinthians 12:13). The broad scope of His divine activity includes convicting the world of sin, of righteousness, and of judgment; glorifying the Lord Jesus Christ; and transforming believers into the image of Christ (John 16:7-9; Acts 1:5; 2:4; Romans 8:29; 2 Corinthians 3:18; Ephesians 2:22).
The Holy Spirit is the supernatural and sovereign Agent in regeneration, baptizing all believers into the Body of Christ (1 Corinthians 12:13). The Holy Spirit also indwells, sanctifies, instructs, empowers believers for service, and seals them unto the day of redemption (Romans 8:9; 2 Corinthians 3:6; Ephesians 1:13).
The Holy Spirit is the divine Teacher, who guided the apostles and prophets into all truth as they committed to writing God’s revelation, the Bible. Every believer possesses the indwelling presence of the Holy Spirit from the moment of salvation, and it is the duty of all those born of the Spirit to be filled with (controlled by) the Spirit (John 16:13; Romans 8:9; Ephesians 5:18; 2 Peter 1:19-21; 1 John 2:20, 27).