Brother F, God had provided you with a laborer of deep experience, the ablest in the field. He was one who had been acquainted in his own experience with the wiles of Satan, and who had passed through most intense mental anguish. He had been permitted in the all-wise providence of God to feel the heat of the refining furnace and had there learned that every refuge but God would fail and every prop upon which he could lean for support would prove but a broken reed. You should have realized that Brother Andrews had as deep an interest in the discussion as yourself, and you should have listened in the spirit of humility to his counsel and profited by his instructions. But Satan had an object to gain here, to defeat the purpose of God, and he stepped in to take possession of your mind and thereby thwart the work of God. You rushed into battle in your own strength, and angels left you to carry it on. But God in mercy to His cause would not suffer the enemies of His truth to obtain a decided…
"Lo, thou trustest in the staff of this broken reed, on Egypt; whereon if a man lean, it will go into his hand, and pierce it: so is Pharaoh king of Egypt to all that trust in him."
The EGW passage uses the exact phrase "broken reed" to describe relying on something other than God, which is a direct allusion to Isaiah 36:6.
"Behold, I have refined thee, but not with silver; I have chosen thee in the furnace of affliction."
The EGW passage speaks of Brother Andrews being permitted to feel the heat of the refining furnace, which is a clear parallel to the concept of being refined in the furnace of affliction as described in Isaiah 48:10. Both passages connect suffering with spiritual refinement.
"Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:"
The EGW passage describes Satan's attempt to take possession of Brother F's mind and thwart God's work, which parallels the warning in 1 Peter 5:8 about the devil seeking whom he may devour. Both passages highlight the active and dangerous role of Satan.