"I saw that the strength of the children of God is in their humility. When they are little in their own eyes, Jesus will be to them their strength and their righteousness, and God will prosper their labors. I was shown that God would prove Brother A. He would give him a measure of prosperity; and if he would bear the test, if he would turn the blessings of God to good account, not taking honor to himself and not becoming lifted up, selfish, and self-confident, the Lord would continue His blessings for the sake of His cause and for His own glory. 3T 307.1"
"Blessed are the poor in spirit: for theirs is the kingdom of heaven."
The EGW passage directly reflects the principle of humility leading to strength and God's blessing, as expressed in Matthew 5:3.
"I saw, Brother A, that you were in the greatest danger of becoming lifted up, self-righteous, self-sufficient, and feeling that you are rich and in need of nothing. Unless you guard yourself upon these points, the Lord will allow you to go on until you make your weakness apparent to all. You will be brought into positions where you will be sorely tempted if others do not regard you in as exalted a light as you estimate yourself and your ability. I was shown that you were poorly prepared to bear much prosperity and a great amount of success. A thorough conversion alone will do the work necessary to be done in your case. 3T 307.2"
"Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:"
The EGW passage uses the exact phrase 'rich and in need of nothing' from Revelation 3:17, indicating a direct allusion to the Laodicean church's condition.