The Holy Spirit will magnify and glorify Christ in the revelation of the New Testament. So the first promise is knowledge: there is much to be revealed.
Never neglect the Scriptures, never neglect the public instruction in God’s word, always be a great learner, always moving forward. It is your privilege, it is essential to you, to be ever deepening in the understanding of the things of God.
What is meant by the expression concerning Christ that he is eternally begotten. Well just that. He is the Son of God. He is magnified. He always has been. He is eternally begotten of the Father. He does not mean he is inferior to the Father. There has always been going back into eternity past a Father-Son relationship between the first and second members of the Godhead. The Father and the Son, and the Holy Spirit is also equal to them. But the Son is always described in terms of the Father-Son relationship. You think of an ancient king, and the venerable father, he is the old king. But now the son is grown up, he is mature, he is an adult. Perhaps he is in his forties. He is now co-regent. He is equally king, in fact he sometimes takes most of the authority upon himself. No longer is he to be thought of as boy or as a child. He is equal with his father; he is co-regent. Now if you capture that, that is the eternal relationship of the Father and the Son, and has always been. He was never born as far as being God is concerned. He is eternally begotten. He is eternally proceeds from the Father. Father and Son equally eternal, equally God, equally powerful, equally regal and royal, equal in every sense. Do not let the term ‘begotten’ overpower the expression for you. He is eternally begotten, equal in every conceivable sense. And that is how we describe it theologically, the relationship between the Father and the Son, and the Holy Spirit also proceeds from Father and Son and is equal to them.