"His prayer is heard. While He is bowed in lowliness upon the stony ground, suddenly the heavens open, the golden gates of the city of God are thrown wide, and holy radiance descends upon the mount, enshrouding the Saviour's form. Divinity from within flashes through humanity, and meets the glory coming from above. Arising from His prostrate position, Christ stands in godlike majesty. The soul agony is gone. His countenance now shines “as the sun,” and His garments are “white as the light.” DA 421.1"
"And was transfigured before them: and his face did shine as the sun, and his raiment was white as the light."
The EGW passage directly alludes to Matthew 17:2, describing Jesus' face shining as the sun and His garments being white as the light during the transfiguration. The language is very similar and clearly references the biblical account.
"The disciples, awaking, behold the flood of glory that illuminates the mount. In fear and amazement they gaze upon the radiant form of their Master. As they become able to endure the wondrous light, they see that Jesus is not alone. Beside Him are two heavenly beings, in close converse with Him. They are Moses, who upon Sinai had talked with God; and Elijah, to whom the high privilege was given—granted to but one other of the sons of Adam—never to come under the power of death. DA 421.2"
"And, behold, there appeared unto them Moses and Elias talking with him."
The EGW passage directly alludes to Matthew 17:3, mentioning the appearance of Moses and Elijah talking with Jesus during the transfiguration. The reference is clear and unambiguous.
Upon Mount Pisgah fifteen centuries before, Moses had stood gazing upon the Land of Promise. But because of his sin at Meribah, it was not for him to enter there. Not for him was the joy of leading the host of Israel into the inheritance of their fathers. His agonized entreaty, “I pray Thee, let me go over, and see the good land that is beyond Jordan, that goodly mountain, and Lebanon” ( Deuteronomy 3:25 ), was refused. The hope that for forty years had lighted up the darkness of the desert wanderings must be denied. A wilderness grave was the goal of those years of toil and heart-burdening care. But He who is “able to do exceeding abundantly above all that we ask or think” ( Ephesians 3:20 ), had in this measure answered His servant's prayer. Moses passed under the dominion of death, but he was not to remain in the tomb. Christ Himself called him forth to life. Satan the tempter had claimed the body of Moses because of his sin; but Christ the Saviour brought him forth from the grave. …
"I pray thee, let me go over, and see the good land that is beyond Jordan, that goodly mountain, and Lebanon."
Ellen White directly references Deuteronomy 3:25 in this passage.
"Now unto him that is able to do exceeding abundantly above all that we ask or think, according to the power that worketh in us,"
Ellen White directly references Ephesians 3:20 in this passage.
"Moses upon the mount of transfiguration was a witness to Christ's victory over sin and death. He represented those who shall come forth from the grave at the resurrection of the just. Elijah, who had been translated to heaven without seeing death, represented those who will be living upon the earth at Christ's second coming, and who will be “changed, in a moment, in the twinkling of an eye, at the last trump;” when “this mortal must put on immortality,” and “this corruptible must put on incorruption.” 1 Corinthians 15:51-53 . Jesus was clothed with the light of heaven, as He will appear when He shall come “the second time without sin unto salvation.” For He will come “in the glory of His Father with the holy angels.” Hebrews 9:28 ; Mark 8:38 . The Saviour's promise to the disciples was now fulfilled. Upon the mount the future kingdom of glory was represented in miniature,—Christ the King, Moses a representative of the risen saints, and Elijah of the translated ones. DA 421.4"
"Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. For this corruptible must put on incorruption, and this mortal must put on immortality."
Ellen White directly references 1 Corinthians 15:51-53 in this passage.
"So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation."
Ellen White directly references Hebrews 9:28 in this passage.
"Whosoever therefore shall be ashamed of me and of my words in this adulterous and sinful generation; of him also shall the Son of man be ashamed, when he cometh in the glory of his Father with the holy angels."
Ellen White directly references Mark 8:38 in this passage.