"The angels of glory find their joy in giving,—giving love and tireless watchcare to souls that are fallen and unholy. Heavenly beings woo the hearts of men; they bring to this dark world light from the courts above; by gentle and patient ministry they move upon the human spirit, to bring the lost into a fellowship with Christ which is even closer than they themselves can know. DA 21.1"
"Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?"
Hebrews 1:14 explicitly states that angels are ministering spirits sent to serve those who will inherit salvation. EGW expands on this by describing the angels' joy in giving and their tireless watchcare over fallen souls, directly reflecting the principle of angelic ministry outlined in Hebrews.
"I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance."
Both passages emphasize joy in heaven over repentance. EGW expands on the ministry of angels, but the core idea of heavenly joy over sinners is present in both.
"But turning from all lesser representations, we behold God in Jesus. Looking unto Jesus we see that it is the glory of our God to give. “I do nothing of Myself,” said Christ; “the living Father hath sent Me, and I live by the Father.” “I seek not Mine own glory,” but the glory of Him that sent Me. John 8:28 ; 6:57 ; 8:50 ; 7:18 . In these words is set forth the great principle which is the law of life for the universe. All things Christ received from God, but He took to give. So in the heavenly courts, in His ministry for all created beings: through the beloved Son, the Father's life flows out to all; through the Son it returns, in praise and joyous service, a tide of love, to the great Source of all. And thus through Christ the circuit of beneficence is complete, representing the character of the great Giver, the law of life. DA 21.2"
"Then said Jesus unto them, When ye have lifted up the Son of man, then shall ye know that I am he, and that I do nothing of myself; but as my Father hath taught me, I speak these things."
Ellen White directly references John 8:28 in this passage.
"In heaven itself this law was broken. Sin originated in self-seeking. Lucifer, the covering cherub, desired to be first in heaven. He sought to gain control of heavenly beings, to draw them away from their Creator, and to win their homage to himself. Therefore he misrepresented God, attributing to Him the desire for self-exaltation. With his own evil characteristics he sought to invest the loving Creator. Thus he deceived angels. Thus he deceived men. He led them to doubt the word of God, and to distrust His goodness. Because God is a God of justice and terrible majesty, Satan caused them to look upon Him as severe and unforgiving. Thus he drew men to join him in rebellion against God, and the night of woe settled down upon the world. DA 21.3"
"How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!"
EGW directly references Lucifer's desire to be first in heaven and his misrepresentation of God, which aligns with the themes and implicit narrative of Isaiah 14:12 regarding Lucifer's fall.