The Holy Spirit came to glorify Christ and to lead believers into all truth. On the eve of His crucifixion while still in the Upper Room, the Lord Jesus said to the disciples, "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."
The Holy Spirit came to enable you to know Christ through a new birth and to give you the power to live and share the abundant life which Jesus promised to all who trust and obey Him.
The Holy Spirit inspired holy men of old to write the Scriptures. As you read the Bible, He reveals its truth to you. I read passages of Scripture that I have read many times before, and suddenly, at the moment I need a particular truth, a certain passage comes alive to me. Why? Because the Holy Spirit makes the Word of God relevant and meaningful when I need it. It is a living Book inspired by the Spirit, and only Christians who are filled with the Spirit can understand the true meaning of God's Word.
I pray and - except for the prayer of confession - I cannot expect God to answer my prayer unless I am walking in the Spirit. I witness, and no one responds unless I am controlled and empowered by the Spirit.
I cannot live a holy life apart from the help of the Holy Spirit for, "the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self control."
A minister friend said to me, "I don't like all of this talk about the Holy Spirit. I want to talk about Jesus Christ." I reminded him that that was the reason the Holy Spirit came - to exalt and glorify Christ.''
It is impossible to even know Christ apart from the regenerating ministry of the Spirit. It was Jesus of Nazareth, Himself, who said, "Unless a man is born of water and the Spirit, he cannot enter the kingdom of God." It is impossible for you to become a Christian, to understand the Bible and other spiritual truths, to pray, to live a holy life, to witness or do anything for the Lord Jesus apart from the person of the Holy Spirit of God.