"Chapter 40—God's People Delivered When the protection of human laws shall be withdrawn from those who honor the law of God, there will be, in different lands, a simultaneous movement for their destruction. As the time appointed in the decree draws near, the people will conspire to root out the hated sect. It will be determined to strike in one night a decisive blow, which shall utterly silence the voice of dissent and reproof. GC 635"
"And at that time shall Michael stand up, the great prince which standeth for the children of thy people: and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book."
Both passages describe a time of great trouble and persecution for God's people, followed by deliverance. While not a direct quote, the themes are strongly parallel.
"The people of God—some in prison cells, some hidden in solitary retreats in the forests and the mountains —still plead for divine protection, while in every quarter companies of armed men, urged on by hosts of evil angels, are preparing for the work of death. It is now, in the hour of utmost extremity, that the God of Israel will interpose for the deliverance of His chosen. Saith the Lord; “Ye shall have a song, as in the night when a holy solemnity is kept; and gladness of heart, as when one goeth ... to come into the mountain of the Lord, to the Mighty One of Israel. And the Lord shall cause His glorious voice to be heard, and shall show the lighting down of His arm, with the indignation of His anger, and with the flame of a devouring fire, with scattering, and tempest, and hailstones.” Isaiah 30:29, 30 . GC 635.2"
"Ye shall have a song, as in the night when a holy solemnity is kept; and gladness of heart, as when one goeth with a pipe to come into the mountain of the Lord, to the mighty One of Israel."
EGW directly quotes Isaiah 30:29.
"With shouts of triumph, jeering, and imprecation, throngs of evil men are about to rush upon their prey, when, lo, a dense blackness, deeper than the darkness of the night, falls upon the earth. Then a rainbow, shining with the glory from the throne of God, spans the heavens and seems to encircle each praying company. The angry multitudes are suddenly arrested. Their mocking cries die away. The objects of their murderous rage are forgotten. With fearful forebodings they gaze upon the symbol of God's covenant and long to be shielded from its overpowering brightness. GC 635.3"
"And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:"
Both passages describe a scene of terror where people seek to hide from divine wrath. The EGW passage amplifies the idea of people wanting to be shielded from God's presence, as described in Revelation.
"I do set my bow in the cloud, and it shall be for a token of a covenant between me and the earth."
The rainbow in EGW's writing is explicitly linked to the throne of God and acts as a symbol of covenant, echoing the Genesis passage where the rainbow is a token of God's covenant with the earth.