"Often the church militant is called upon to suffer trial and affliction; for not without severe conflict is the church to triumph. “The bread of adversity,” “the water of affliction” ( Isaiah 30:20 ), these are the common lot of all; but none who put their trust in the One mighty to deliver will be utterly overwhelmed. “Thus saith the Lord that created thee, O Jacob, and He that formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name, thou art Mine. When thou passest through the waters, I will be with thee; and through the rivers, they shall not overflow thee: when thou walkest through the fire, thou shalt not be burned; neither shall the flame kindle upon thee. For I am the Lord thy God, the Holy One of Israel, thy Saviour: I gave Egypt for thy ransom, Ethiopia and Seba for thee. Since thou wast precious in My sight, thou hast been honorable, and I have loved thee: therefore will I give men for thee, and people for thy life.” Isaiah 43:1-4 . PK 723.1"
"And though the Lord give you the bread of adversity, and the water of affliction, yet shall not thy teachers be removed into a corner any more, but thine eyes shall see thy teachers:"
Ellen White directly references Isaiah 30:20 in this passage.
"But now thus saith the Lord that created thee, O Jacob, and he that formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name; thou art mine. When thou passest through the waters, I will be with thee; and through the rivers, they shall not overflow thee: when thou walkest through the fire, thou shalt not be burned; neither shall the flame kindle upon thee. For I am the Lord thy God, the Holy One of Israel, thy Saviour: I gave Egypt for thy ransom, Ethiopia and Seba for thee. Since thou wast precious in my sight, thou hast been honourable, and I have loved thee: therefore will I give men for thee, and people for thy life."
Ellen White directly references Isaiah 43:1-4 in this passage.
"There is forgiveness with God; there is acceptance full and free through the merits of Jesus, our crucified and risen Lord. Isaiah heard the Lord declaring to His chosen ones: “I, even I, am He that blotteth out thy transgressions for Mine own sake, and will not remember thy sins. Put Me in remembrance: let us plead together: declare thou, that thou mayest be justified.” “Thou shalt know that I the Lord am thy Saviour and thy Redeemer, the Mighty One of Jacob.” Verses 25, 26 ; 60:16 . PK 723.2"
"I, even I, am he that blotteth out thy transgressions for mine own sake, and will not remember thy sins."
The EGW passage directly quotes Isaiah 43:25, making it an explicit allusion.