“Of whom speaketh the prophet this?” the eunuch asked, “of himself, or of some other man?” Then Philip opened to him the great truth of redemption. Beginning at the same scripture, he “preached unto him Jesus.” AA 108.1 The man's heart thrilled with interest as the Scriptures were explained to him; and when the disciple had finished, he was ready to accept the light given. He did not make his high worldly position an excuse for refusing the gospel. “As they went on their way, they came unto a certain water: and the eunuch said, See, here is water; what doth hinder me to be baptized? And Philip said, If thou believest with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God. And he commanded the chariot to stand still: and they went down both into the water, both Philip and the eunuch; and he baptized him. AA 108.2 “And when they were come up out of the water, the Spirit of the Lord caught away Philip, that the eunuch saw him no more: an…
"And the eunuch answered Philip, and said, I pray thee, of whom speaketh the prophet this? of himself, or of some other man?"
The EGW passage directly quotes Acts 8:34.