The Holy Spirit comes into the world to reveal and glorify Jesus Christ, to convict sinners of their sin, righteousness, and judgement.
At the moment of initial belief, He imparts the very Life of Christ into believers, immerses their new human spirit into Christ in Heaven, personally indwells, seals, and immerses them into the Body of Christ, imparts spiriutal gifts, and enables them to live holy and godly lives.
Simply stated, every heavenly blessing in the heavens is ours at the moment of initial belief, having been done by, and given from, God the Holy Spirit, who personally has become our guide into all truth.
(Genesis 1:2; Psalm 139:7; Isaiah 40:13-14; Matthew 1:18- 20; 28:19; Luke 1:35; John 1:13; 3:3-8; 6:63; 14:16-17, 26; 15:26; 16:7-15, 13; Acts 2:1-4; 5:3-4; 13:52; Romans 8:9; 1 Corinthians 2:9,10, 12; 6:19; 12:13; 2 Corinthians 13:14; Ephesians 1:13-14; 2:22; 4:30; 5:18; 2 Thessalonians 2:7; 2 Timothy 3:16- 17; Titus 3:5; Hebrews 9:14; 2 Peter 1:20-21; 1 John 2:20, 27)