What do we believe about the Holy Spirit?
That he is God, coeternal with the Father and the Son, and that God grants him irrevocably to all who believe.
John 14:16–17: I will ask the Father, and he will give you another advocate to help you and be with you forever—the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you.