"For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God: I will sit also upon the mount of the congregation, in the sides of the north:"
Isaiah 14:13 describes Lucifer's desire to exalt himself above God, which is a clear example of opposition to the Most High, the phrase used by EGW.
"Had Satan revealed himself in his real character, he would have been repulsed at once, for Adam and Eve had been warned against this dangerous foe; but he worked in the dark, concealing his purpose, that he might more effectually accomplish his object. Employing as his medium the serpent, then a creature of fascinating appearance, he addressed himself to Eve: “Hath God said, Ye shall not eat of every tree of the garden?” Genesis 3:1 . Had Eve refrained from entering into argument with the tempter, she would have been safe; but she ventured to parley with him and fell a victim to his wiles. It is thus that many are still overcome. They doubt and argue concerning the requirements of God; and instead of obeying the divine commands, they accept human theories, which but disguise the devices of Satan. GC 531.2"
"Now the serpent was more subtil than any beast of the field which the Lord God had made. And he said unto the woman, Yea, hath God said, Ye shall not eat of every tree of the garden?"
Ellen White directly references Genesis 3:1 in this passage.