He shall glorify me. John 16:14
After the Lord Jesus Christ went back to heaven, He sent upon the church the Holy Spirit, and the business and work of the Holy Spirit is to glorify the Son. Now this is a marvelous statement. We do not see the Holy Spirit—He is invisible, and in a sense that is because His work is to glorify the Son. Indeed, we read about the Holy Spirit in John 16:14 the same thing that we read elsewhere about the Son. Our Lord says that the Holy Spirit does not speak of Himself, but “He shall glorify me: for he shall receive of mine, and shall show it unto you.” We are told precisely the same thing about the Son in relation to the Father. Therefore, the great controlling thought we must hold in our minds is that the chief work of the Holy Spirit is to glorify the Lord Jesus Christ.
In a sense the final glorification of the Lord Jesus Christ was the coming of the Holy Spirit. We are told in John’s Gospel that the Holy Spirit was not yet come because Jesus was not yet glorified. We see this in the great promise our Lord made one day in the Temple when He said, “If any man thirst, let him come unto me, and drink. He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water” (John 7:37-38). And John expounds on that: “But this spake he of the Spirit, which they that believe on him should receive: for the Holy Ghost was not yet given; because that Jesus was not yet glorified.” So the Holy Spirit could not be given until Christ had finished the work the Father had given Him to do, until He had died and risen again, until He had ascended and taken His seat at the right hand of God. God then said, in effect, “I give You the promise; You send it upon the people.”
Martyn Lloyd-Jones, Walking With God: Day by Day