"worn. They are crowned with diadems more glorious than were ever placed upon the brow of earthly monarchs. The days of pain and weeping are forever ended. The King of glory has wiped the tears from all faces; every cause of grief has been removed. Amid the waving of palm branches they pour forth a song of praise, clear, sweet, and harmonious; every voice takes up the strain, until the anthem swells through the vaults of heaven: “Salvation to our God which sitteth upon the throne, and unto the Lamb.” And all the inhabitants of heaven respond in the ascription: “Amen: Blessing, and glory, and wisdom, and thanksgiving, and honor, and power, and might, be unto our God for ever and ever.” Revelation 7:10, 12 . GC 650.1"
"After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands;"
The EGW passage directly quotes Revelation 7:10 and 7:12, making it an explicit allusion. The context also aligns with the biblical passage's description of the redeemed in heaven.