Daniel Mesa is an SDA Pastor that recently found God raised the SDA Church as non-Trinitarian. He previously worked for Pastor Stephen Bohr but was let go when he announced that he had found the truth. Sadly, such is the case for any SDA Pastors that find the truth.
In brief, I believe the Holy Spirit is the “Third Person of the Godhead,” one of the “three great powers of Heaven,” one of the “Heavenly Trio,” etc. just as much as EGW says it! I believe the Spirit proceeds from the Father (John 15:26) and also that, “The Holy Spirit, which proceeds from the only begotten Son of God, binds the human agent, body, soul, and spirit, to the perfect, divine-human nature of Christ.” RH April 5, 1906, par. 16. I believe the Bible teaches that the Spirit is a representative of both the Father and the Son (“WE will come unto him, and make OUR abode with him” John 14:23).