"“Sing, O heavens; and be joyful, O earth; and break forth into singing, O mountains: for the Lord hath comforted His people, and will have mercy upon His afflicted. But Zion said, The Lord hath forsaken me, and my Lord hath forgotten me. Can a woman forget her sucking child, that she should not have compassion on the son of her womb? yea, they may forget, yet will I not forget thee. Behold, I have graven thee upon the palms of My hands; thy walls are continually before Me.” Isaiah 49:8-16 . AA 11.1"
"Thus saith the Lord, In an acceptable time have I heard thee, and in a day of salvation have I helped thee: and I will preserve thee, and give thee for a covenant of the people, to establish the earth, to cause to inherit the desolate heritages; That thou mayest say to the prisoners, Go forth; to them that are in darkness, Shew yourselves. They shall feed in the ways, and their pastures shall be in all high places. They shall not hunger nor thirst; neither shall the heat nor sun smite them: for he that hath mercy on them shall lead them, even by the springs of water shall he guide them. And I will make all my mountains a way, and my highways shall be exalted. Behold, these shall come from far: and, lo, these from the north and from the west; and these from the land of Sinim. Sing, O heavens; and be joyful, O earth; and break forth into singing, O mountains: for the Lord hath comforted his people, and will have mercy upon his afflicted. But Zion said, The Lord hath forsaken me, and my Lord hath forgotten me. Can a woman forget her sucking child, that she should not have compassion on the son of her womb? yea, they may forget, yet will I not forget thee. Behold, I have graven thee upon the palms of my hands; thy walls are continually before me."
Ellen White directly references Isaiah 49:8-16 in this passage.
"The church is God's fortress, His city of refuge, which He holds in a revolted world. Any betrayal of the church is treachery to Him who has bought mankind with the blood of His only-begotten Son. From the beginning, faithful souls have constituted the church on earth. In every age the Lord has had His watchmen, who have borne a faithful testimony to the generation in which they lived. These sentinels gave the message of warning; and when they were called to lay off their armor, others took up the work. God brought these witnesses into covenant relation with Himself, uniting the church on earth with the church in heaven. He has sent forth His angels to minister to His church, and the gates of hell have not been able to prevail against His people. AA 11.2"
"But with the precious blood of Christ, as of a lamb without blemish and without spot:"
The EGW passage explicitly mentions that mankind was bought with the blood of Christ, which directly echoes the concept of redemption through Christ's blood as described in 1 Peter 1:19.
"Son of man, I have made thee a watchman unto the house of Israel: therefore hear the word at my mouth, and give them warning from me."
The EGW passage speaks of 'watchmen' who bear faithful testimony, which is a clear parallel to Ezekiel 3:17, where Ezekiel is appointed as a watchman to warn the house of Israel. The function of warning is present in both.
"Through centuries of persecution, conflict, and darkness, God has sustained His church. Not one cloud has fallen upon it that He has not prepared for; not one opposing force has risen to counterwork His work, that He has not foreseen. All has taken place as He predicted. He has not left His church forsaken, but has traced in prophetic declarations what would occur, and that which His Spirit inspired the prophets to foretell has been brought about. All His purposes will be fulfilled. His law is linked with His throne, and no power of evil can destroy it. Truth is inspired and guarded by God; and it will triumph over all opposition. AA 11.3"
"Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen."
Both passages convey the idea of God's continued presence and support for His followers, even through trials and tribulations. EGW's statement about God sustaining His church and foreseeing all challenges echoes the sentiment of Jesus' promise in Matthew 28:20 to be with them 'alway, even unto the end of the world.'