Let's look at some important verses about the Holy Spirit:
John 14:16
And I will pray the Father, and He will give you another Helper, that He may abide with you forever
This is about the Holy Spirit. He is our comforter and witness of Christ abiding in us.
John 7:37-39
On the last day, that great day of the feast, Jesus stood and cried out, saying, “If anyone thirsts, let him come to Me and drink. 38 He who believes in Me, as the Scripture has said, out of his heart will flow rivers of living water.” 39 But this He spoke concerning the Spirit, whom those believing in Him would receive; for the Holy Spirit was not yet given, because Jesus was not yet glorified.
This Scripture shows that in order to receive the Holy Spirit, we must accept and receive Jesus Christ as Lord and Savior. We must believe who He is in faith.
2 Corinthians 1:21-22
21 Now He who establishes us with you in Christ and has anointed us is God, 22 who also has sealed us and given us the Spirit in our hearts as a guarantee.
The Holy Spirit is the guarantee [sealed] of our Salvation in Christ Jesus
Ephesians 4:30
And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption
We require to be obedient to GOD so that the Holy Spirit can work fully in His power. GOD does not force Himself upon us but does expect us to submit fully to Him so that His Spirit can do His works without 'grieving' Him.
Romans 8:9
But you are not in the flesh but in the Spirit, if indeed the Spirit of God dwells in you. Now if anyone does not have the Spirit of Christ, he is not His.
We must believe and accept Jesus in order to receive the Spirit of GOD in to abide within us.
Please study these Scripture in regards to the Holy Spirit is and what His function is within the Trinity.
Teaching: Nehemiah 9:16-20, Luke 12:11-12, John 14:23-26, John 16:13-14, 1 Corinthians 2:12-14
Witnessing: John 15:1-27, Acts 5:30-32, Acts 20:22-23, Romans 8:16, Ephesians 3:1-5, Hebrews 10:15, 1 John 5:5-7
Power of the Spirit: Acts 1:6-8, Romans 15:13, 1 Corinthians 6:9-11, 2 Corinthians 3:14-18
What The Spirit Does: John 15:1-26, John 16:1-14, Romans 8:26-28, 1 Corinthians 2:9-10, 2 Corinthians 3:4-6, Ephesians 4:30
Who He Is: John 14:23-26, John 15:26-27, Acts 5:30-32, Hebrews 10:15, 1 John 5:6