Emily - That is a sizable question. Here are a couple of thoughts. The Holy Spirit indwells us and once we become discples, He never leaves us. We hinder Him mainly by not listening. Following are a few scriptures that might help. If you happen to have a Bible software. You could search for Holy Spirit and then determine for your self, who He is and what He does. I'm sure there are others who could give you a more indepth answer. Have you been folowing the other thread on The Holy Spirit? It might help.
13 And you also were included in Christ when you heard the word of truth, the gospel of your salvation. Having believed, you were marked in him with a seal, the promised Holy Spirit, 14 who is a deposit guaranteeing our inheritance until the redemption of those who are God's possession--to the praise of his glory.
Eph 1:13-14 (NIV)
51 "You stiff-necked people, with uncircumcised hearts and ears! You are just like your fathers: You always resist the Holy Spirit!
Acts 7:51 (NIV)
1 Therefore, since we have been justified through faith, we have peace with God through our Lord Jesus Christ, 2 through whom we have gained access by faith into this grace in which we now stand. And we rejoice in the hope of the glory of God. 3 Not only so, but we also rejoice in our sufferings, because we know that suffering produces perseverance; 4 perseverance, character; and character, hope. 5 And hope does not disappoint us, because God has poured out his love into our hearts by the Holy Spirit, whom he has given us.
Romans 5:1-5 (NIV)
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