"that while they trusted in God and walked in His ways He would not forsake them. The Saviour now practiced the lesson He had taught to Israel. By the word of God succor had been given to the Hebrew host, and by the same word it would be given to Jesus. He awaited God's time to bring relief. He was in the wilderness in obedience to God, and He would not obtain food by following the suggestions of Satan. In the presence of the witnessing universe, He testified that it is a less calamity to suffer whatever may befall than to depart in any manner from the will of God. DA 121.1"
"Be strong and of a good courage, fear not, nor be afraid of them: for the Lord thy God, he it is that doth go with thee; he will not fail thee, nor forsake thee."
Both passages emphasize trusting in God and that He will not forsake those who walk in His ways. The EGW passage uses the example of Jesus to illustrate this principle, which is directly stated in Deuteronomy 31:6.
"“Man shall not live by bread alone, but by every word of God.” Often the follower of Christ is brought where he cannot serve God and carry forward his worldly enterprises. Perhaps it appears that obedience to some plain requirement of God will cut off his means of support. Satan would make him believe that he must sacrifice his conscientious convictions. But the only thing in our world upon which we can rely is the word of God. “Seek ye first the kingdom of God, and His righteousness; and all these things shall be added unto you.” Matthew 6:33 . Even in this life it is not for our good to depart from the will of our Father in heaven. When we learn the power of His word, we shall not follow the suggestions of Satan in order to obtain food or to save our lives. Our only questions will be, What is God's command? and what His promise? Knowing these, we shall obey the one, and trust the other. DA 121.2"
"But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God."
EGW directly quotes Matthew 4:4, which itself is a reference to Deuteronomy 8:3.
"And he humbled thee, and suffered thee to hunger, and fed thee with manna, which thou knewest not, neither did thy fathers know; that he might make thee know that man doth not live by bread only, but by every word that proceedeth out of the mouth of the Lord doth man live."
While the direct quote is from Matthew 4:4, the sentiment originates in Deuteronomy 8:3, and EGW is clearly referencing this concept.
"But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you."
EGW directly quotes Matthew 6:33.
In the last great conflict of the controversy with Satan those who are loyal to God will see every earthly support cut off. Because they refuse to break His law in obedience to earthly powers, they will be forbidden to buy or sell. It will finally be decreed that they shall be put to death. See Revelation 13:11-17 . But to the obedient is given the promise, “He shall dwell on high: his place of defense shall be the munitions of rocks: bread shall be given him; his waters shall be sure.” Isaiah 33:16 . By this promise the children of God will live. When the earth shall be wasted with famine, they shall be fed. “They shall not be ashamed in the evil time: and in the days of famine they shall be satisfied.” Psalm 37:19 . To that time of distress the prophet Habakkuk looked forward, and his words express the faith of the church: “Although the fig tree shall not blossom, neither shall fruit be in the vines; the labor of the olive shall fail, and the fields shall yield no meat; the flock sha…
"And I beheld another beast coming up out of the earth; and he had two horns like a lamb, and he spake as a dragon. And he exerciseth all the power of the first beast before him, and causeth the earth and them which dwell therein to worship the first beast, whose deadly wound was healed. And he doeth great wonders, so that he maketh fire come down from heaven on the earth in the sight of men, And deceiveth them that dwell on the earth by the means of those miracles which he had power to do in the sight of the beast; saying to them that dwell on the earth, that they should make an image to the beast, which had the wound by a sword, and did live. And he had power to give life unto the image of the beast, that the image of the beast should both speak, and cause that as many as would not worship the image of the beast should be killed. And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads: And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name."
Ellen White directly references Revelation 13:11-17 in this passage.
"They shall not be ashamed in the evil time: and in the days of famine they shall be satisfied."
Ellen White directly references Psalms 37:19 in this passage.
"And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name."
EGW explicitly references Revelation 13:11-17 and the specific detail of not being able to buy or sell is directly from verse 17.
"He shall dwell on high: his place of defence shall be the munitions of rocks: bread shall be given him; his waters shall be sure."
EGW directly quotes Isaiah 33:16.