The Holy - God the Spirit

We believe the Holy Spirit is a person and is God, possessing all the divine attributes. 

”But Peter said, “Ananias, why has Satan filled your heart to lie to the Holy Spirit and to keep back for yourself part of the proceeds of the land? While it remained unsold, did it not remain your own? And after it was sold, was it not at your disposal? Why is it that you have contrived this deed in your heart? You have not lied to man but to God.” - Acts 5:3–4

He convicts of sin:

”Nevertheless, I tell you the truth: it is to your advantage that I go away, for if I do not go away, the Helper will not come to you. But if I go, I will send him to you. And when he comes, he will convict the world concerning sin and righteousness and judgment: concerning sin, because they do not believe in me; concerning righteousness, because I go to the Father, and you will see me no longer; concerning judgment, because the ruler of this world is judged.” - John 16:7–11

Regenerates: 

”Jesus answered, “Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.” - John 3:5

Indwells: 

”Or do you not know that your body is a temple of the Holy Spirit within you, whom you have from God? You are not your own” - 1 Corinthians 6:19

Baptizes :

”For in one Spirit we were all baptized into one body—Jews or Greeks, slaves or free—and all were made to drink of one Spirit.” - 1 Corinthians 12:13

He seals all believers at the moment of their salvation: 

”In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit” - Ephesians 1:13

”And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.” - Ephesians 4:30

He fills yielded believers with the goal of conforming them to the image of Christ:

”And do not get drunk with wine, for that is debauchery, but be filled with the Spirit” - Ephesians 5:18

”For those whom he foreknew he also predestined to be conformed to the image of his Son, in order that he might be the firstborn among many brothers.” - Romans 8:29