"By the deliverance of His faithful servants, the Lord declared that He takes His stand with the oppressed, and rebukes all earthly powers that rebel against the authority of Heaven. The three Hebrews declared to the whole nation of Babylon their faith in Him whom they worshiped. They relied on God. In the hour of their trial they remembered the promise, “When thou passest through the waters, I will be with thee; and through the rivers, they shall not overflow thee: when thou walkest through the fire, thou shalt not be burned; neither shall the flame kindle upon thee.” Isaiah 43:2 . And in a marvelous manner their faith in the living Word had been honored in the sight of all. The tidings of their wonderful deliverance were carried to many countries by the representatives of the different nations that had been invited by Nebuchadnezzar to the dedication. Through the faithfulness of His children, God was glorified in all the earth. PK 511.1"
"When thou passest through the waters, I will be with thee; and through the rivers, they shall not overflow thee: when thou walkest through the fire, thou shalt not be burned; neither shall the flame kindle upon thee."
EGW directly quotes Isaiah 43:2 in the context of the Hebrew children's deliverance from the fiery furnace, making it a clear and explicit allusion.