1For this cause I, Paul, am the prisoner of Christ Jesus on behalf of you Gentiles, 2if it is so that you have heard of the administration of that grace of God which was given me toward you, 3how that by revelation the mystery was made known to me, as I wrote before in few words, 4by which, when you read, you can perceive my understanding in the mystery of Christ, 5which in other generations was not made known to the children of men, as it has now been revealed to his holy apostles and prophets in the Spirit, 6that the Gentiles are fellow heirs and fellow members of the body, and fellow partakers of his promise in Christ Jesus through the Good News, 7of which I was made a servant according to the gift of that grace of God which was given me according to the working of his power. 8To me, the very least of all saints, was this grace given, to preach to the Gentiles the unsearchable riches of Christ, 9and to make all men see what is the administration of the mystery which for ages has been hidden in God, who created all things through Jesus Christ, 10to the intent that now through the assembly the manifold wisdom of God might be made known to the principalities and the powers in the heavenly places, 11according to the eternal purpose which he accomplished in Christ Jesus our Lord. 12In him we have boldness and access in confidence through our faith in him. 13Therefore I ask that you may not lose heart at my troubles for you, which are your glory.
14For this cause, I bow my knees to the Father of our Lord Jesus Christ, 15from whom every family in heaven and on earth is named, 16that he would grant you, according to the riches of his glory, that you may be strengthened with power through his Spirit in the inner person, 17that Christ may dwell in your hearts through faith, to the end that you, being rooted and grounded in love, 18may be strengthened to comprehend with all the saints what is the width and length and height and depth, 19and to know Christ’s love which surpasses knowledge, that you may be filled with all the fullness of God.
20Now to him who is able to do exceedingly abundantly above all that we ask or think, according to the power that works in us, 21to him be the glory in the assembly and in Christ Jesus to all generations, forever and ever. Amen.
The Holy Spirit is eternally God and the third person of the Trinity. As such, He is fully divine with all of the nature, attributes, and perfections of God. The Spirit of God is the one through whom God empowers His people, reveals His will, has revealed His Word, and imparts His personal presence among His people. He regenerates believers and works to glorify Jesus Christ.
In the New Testament, the Greek word πνεῦμα pneuma (wind, spirit) has similar meaning and range of use. However, the Spirit is given an increasingly prominent role as He empowers and leads Jesus (Luke 3:22, 4:1-2) as well as permanently living in believers and empowering them for service in the Church (Jn. 20:22, 1 Cor. 12:7-11, 1 Jn. 3:24). More often than not the Spirit of God is known in the New Testament as the Holy Spirit, and clearly revealed to be God Himself, though He is also known by other designations, which will be evident in going to the verses that concern the third person of the undivided Trinity. Though His work of revelation ceased with the completion of the New Testament, He continues to work to illuminate the hearts of His people to understand and apply the Scriptures (1 Cor. 2:6-16).