The Holy Spirit is a person just as the Father and the Sons are persons (Matthew 28:19). Some marks of personality which the Holy Spirit has are life (2 Corinthians 3:3), intelligence (Romans 8:27), commanding (Acts 8:29), guiding (Romans 8:14), will (1 Corinthians 12:11), and emotion (Ephesians 4:30).
The Holy Spirit is deity in the same sense as the Father and the Son are deity. He is called God (Acts 5:3-4). The characteristics applied to the Holy Spirit clearly show His deity: omnipresence (Psalm 139:7), omniscience (1 Corinthians 2:10-11), omnipotence (Luke 1:35), and holiness.
The general works of the Holy Spirit include His presence in creation (Genesis 1:2), His inspiration and illumination of the Scriptures (2 Peter 1:20-21), convicting the world of sin (John 16:7-9), and glorifying the Lord Jesus Christ (John 15:26). His work in relation to Christ includes conceiving (Matthew 1:18), anointing (Isaiah 61:1), filling and leading (Luke 4:1), and empowering (Romans 8:11).
The Holy Spirit’s work with believers includes activities at salvation. These activities include: drawing (John 6:44), regeneration (Titus 3:5), baptism (1 Corinthians 12:13), indwelling (1 Corinthians 6:19), and sealing (Ephesians 1:13). With respect to the Christian life, the Holy Spirit controls and guides the believer except when He is quenched (1 Thessalonians 5:19) or grieved (Ephesians 4:30) by the believer’s sin. All acts done while He is guiding the believer will result in a reward at the bema seat of Christ (2 Corinthians 5:10). The ability to live righteously comes from the fruit of the Spirit (Galatians 5:22-23).