"God could have destroyed Satan and his sympathizers as easily as one can cast a pebble to the earth; but He did not do this. Rebellion was not to be overcome by force. Compelling power is found only under Satan's government. The Lord's principles are not of this order. His authority rests upon goodness, mercy, and love; and the presentation of these principles is the means to be used. God's government is moral, and truth and love are to be the prevailing power. DA 759.1"
"Or despisest thou the riches of his goodness and forbearance and longsuffering; not knowing that the goodness of God leadeth thee to repentance?"
Both passages highlight God's character as being based on goodness, mercy, and love, rather than force. Romans 2:4 speaks of God's goodness leading to repentance, while the EGW quote contrasts God's moral government with Satan's use of force. The EGW passage expands on the principle of God's goodness as the foundation of His authority.
"decided that time must be given for Satan to develop the principles which were the foundation of his system of government. He had claimed that these were superior to God's principles. Time was given for the working of Satan's principles, that they might be seen by the heavenly universe. DA 759.2"
"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? And the woman said unto the serpent, We may eat of the fruit of the trees of the garden: But of the fruit of the tree which is in the midst of the garden, God hath said, Ye shall not eat of it, neither shall ye touch it, lest ye die. And the serpent said unto the woman, Ye shall not surely die: For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil."
EGW's statement about giving Satan time to develop his principles directly relates to the Genesis account where Satan presents an alternative to God's commands, and humanity is given the choice to follow either. The time given in Genesis is the beginning of the working out of Satan's principles.
"And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, And prevailed not; neither was their place found any more in heaven. And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him."
Revelation 12 describes the war in heaven and Satan's expulsion, which is the backdrop for EGW's statement about Satan's principles being tested. The passage provides the context for the 'time' given to Satan.
Satan led men into sin, and the plan of redemption was put in operation. For four thousand years, Christ was working for man's uplifting, and Satan for his ruin and degradation. And the heavenly universe beheld it all. DA 759.3 When Jesus came into the world, Satan's power was turned against Him. From the time when He appeared as a babe in Bethlehem, the usurper worked to bring about His destruction. In every possible way he sought to prevent Jesus from developing a perfect childhood, a faultless manhood, a holy ministry, and an unblemished sacrifice. But he was defeated. He could not lead Jesus into sin. He could not discourage Him, or drive Him from a work He had come on earth to do. From the desert to Calvary, the storm of Satan's wrath beat upon Him, but the more mercilessly it fell, the more firmly did the Son of God cling to the hand of His Father, and press on in the bloodstained path. All the efforts of Satan to oppress and overcome Him only brought out in a purer light His spo…
"And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel."
The EGW passage describes the ongoing conflict between Christ and Satan, echoing the enmity established in Genesis 3:15. It's a clear thematic parallel.
"All heaven and the unfallen worlds had been witnesses to the controversy. With what intense interest did they follow the closing scenes of the conflict. They beheld the Saviour enter the garden of Gethsemane, His soul bowed down with the horror of a great darkness. They heard His bitter cry, “Father, if it be possible, let this cup pass from Me.” Matthew 26:39 . As the Father's presence was withdrawn, they saw Him sorrowful with a bitterness of sorrow exceeding that of the last great struggle with death. The bloody sweat was forced from His pores, and fell in drops upon the ground. Thrice the prayer for deliverance was wrung from His lips. Heaven could no longer endure the sight, and a messenger of comfort was sent to the Son of God. DA 759.5"
"And he went a little further, and fell on his face, and prayed, saying, O my Father, if it be possible, let this cup pass from me: nevertheless not as I will, but as thou wilt."
Ellen White directly references Matthew 26:39 in this passage.