One of the best proofs that Christ was the Holy Spirit and the Holy Spirit was the first estate of Christ's BEING, before the Incarnation, is that Christ is called the Everlasting Father. We all know that it was the Holy Spirit that Sired Mary. Ellen White was consistent with this in saying that the Holy Spirit was the life, blood, spirit and soul of Christ. This is why Christ is called the Everlasting Father. The ONE ETERNAL SPIRIT, common to both Christ and the Father, sired Christ. Thus, both the Father, and Christ are the Everlasting Father, but only Christ was begotten, both at the Incarnation, when Christ entered Mary's womb, and at the resurrection, when Christ was resurrected as the firstborn from the dead. Thus Christ was "raised" twice, Acts 13:33, Acts 3:22 and Acts 7:37.
Mat 1:16 And Jacob begat Joseph the husband of Mary, of whom was born Jesus, who is called Christ.
Mat 1:18 Now the birth of Jesus Christ was on this wise: When as his mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost.
Mat 1:20 But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
"Christ gives them the breath of HIS OWN SPIRIT, the life of HIS OWN LIFE. The HOLY SPIRIT puts forth its highest energies to work in the heart and mind." Desire of Ages, 827.
"Christ declared that after His ascension, he would send to his church, as his crowning GIFT, the comforter, who is the Holy Spirit,--THE SOUL OF HIS LIFE, THE EFFICACY OF HIS CHURCH, THE LIGHT AND LIFE OF THE WORLD. With HIS SPIRIT Christ sends a reconciling influence and a power that takes away sin. In the gift of the Spirit, [HIS LIFE--THE SOUL OF HIS LIFE] Jesus gave to man the highest good that heaven could bestow." E.G. White, Review and Herald, May 19, 1904. Book 5, p. 42.
"The Holy Spirit is the breath of spiritual life in the soul. The impartation of the Spirit is the impartation of the life of Christ. It imbues the receiver with the attributes of Christ. Only those who are thus taught of God, those who possess the inward working of the Spirit, and in whose life the Christ-life is manifested, are to stand as representative men, to minister in behalf of the church." Desire of Ages, 805.