But notice that all these quotes from Ellen White say there are “ONLY” two beings and that there is the Father and Son “ALONE” and hence there cannot be a third being.
Note that she wrote ALONE and ONLY.
“Let the brightest example the world has yet seen be your example, rather than the greatest and most learned men of the age, who know not God, nor Jesus Christ whom he has sent. The Father and the Son ALONE are to be exalted.” — (E.G. White, The Youth’s Instructor, July 7, 1898) — TWO BEINGS ALONE.
“God and Christ ALONE know what the souls of men have cost.” — (E.G. White, ST, January 13, 1909) — TWO BEINGS ALONE.
“God informed Satan that to his Son ALONE he would reveal his secret purposes, and he required all the family in heaven, even Satan, to yield him implicit, unquestioned obedience;” — (E.G. White, ST, January 9, 1879) — TWO BEINGS ALONE.
“Can anyone consider the condescension of God in preparing the gospel feast, and its great cost, and treat the invitation slightingly? No man, nor even the highest angel, can estimate the great cost; it is known ONLY to the Father and the Son.” — (E.G. White, The Bible Echo, October 28, 1895) — ONLY TWO BEINGS.
“The ONLY Being who was one with God lived the law in humanity, descended to the lowly life of a common laborer, and toiled at the carpenter’s bench with His earthly parent.” — (E.G. White, ST, October 14, 1897) — ONLY TWO BEINGS.
“And truly our fellowship is with the Father, and with his Son Jesus Christ.” — (E.G. White, RH, July 13, 1905) — TWO BEINGS.
“CHRIST the Word, the only-begotten of God, was one with the eternal Father,-one in nature, in character, and in purpose,-the ONLY being in all the universe that could enter into all the counsels and purposes of God. By Christ, the Father wrought in the creation of all heavenly beings.” — (E.G. White, The Great Controversy, p. 493) — ONLY TWO BEINGS.
The third entity is the Spirit of God coming to us through His Son and why Ellen White calls the Holy Spirit the Spirit of Christ. It is their Holy Spirit to state the obvious, not another being. Geoff Lohrere