The Comforter, Spirit of truth, what Ellen White called the third person, and the third great power, the third in what she called the Heavenly trio are of course all what is known as the “Holy Spirit.”
Who was Ellen White referring to with her trio and third person statements? We must ALWAYS let SOP explain SOP. Not make out own assumptions! To do otherwise is dishonest.
“They have ONE God and ONE Saviour; and ONE Spirit--the Spirit of Christ--is to bring unity into their ranks.” — (Ellen G. White, 9T 189.3, 1909)
Who is third? ONE + ONE + ONE = “the Spirit of Christ.”
Without fail she was ALWAYS referring to the Spirit of Christ. NOT a literal third god!
The Holy Spirit is the presence and power of the Father manifested through Jesus Christ, His only begotten son. This is not a separate person of the Godhead who is being sent, it is the very life of God coming to us through His Son.
“The HOLY SPIRIT is the SPIRIT of CHRIST, which is sent to all men to give them sufficiency, that through His grace we might be complete in Him.” — (Ellen G. White, 14MR 84.3)
“The HOLY SPIRIT is the SPIRIT of CHRIST; it is His representative. Here is the divine agency that carries conviction to hearts. When the power of His Spirit is revealed through the servants of God, we behold divinity flashing through humanity.” — (Ellen G. White, 13MR 313.3, 1895)
“We want the HOLY SPIRIT, which is JESUS CHRIST. If we commune with God, we shall have strength and grace and efficiency.” — (Ellen G. White, Lt66, April 10, 1894)
“God help us that we may be sanctified through the truth and that sanctification shall have its influence to leaven those that are around us—not the leaven of malice, not the leaven of jealousy, not the leaven of evil surmisings, but it is the leaven of the SPIRIT of JESUS CHRIST, which is sent down from heaven, called the HOLY GHOST, and that Spirit affects the heart and the character.” — (Ellen G. White, Ms36-1891)
“CHRIST has left HIS HOLY SPIRIT to be HIS representative in the world, to give celestial aid to every hungering, thirsting soul.” — (Ellen G. White, Lt84, October 22, 1895)
“CHRIST came to our world, but the world could not endure His purity. He has gone to His Father, but HE has sent HIS HOLY SPIRIT to represent HIM in the world till he shall come again.” — (Ellen G. White, Ms1, January 11, 1897)
“Cumbered with humanity, CHRIST could not be in every place personally; therefore it was altogether for their advantage that He should leave them, go to His father, and send the Holy Spirit to be His successor on earth. The Holy Spirit is [Christ] HIMSELF, divested of the personality of humanity, and independent thereof. He would represent HIMSELF as present in all places by HIS Holy Spirit, as the Omnipresent.” — (Ellen G. White, Lt119, February 18, 1895)