My opinion has already been stated: He's our comforter & he guides us along the path of holyness in our everyday life.

John 14: 26 But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you. 27Peace I leave with you; my peace I give you. I do not give to you as the world gives. Do not let your hearts be troubled and do not be afraid.