"Prophecy not only foretells the manner and object of Christ's coming, but presents tokens by which men are to know when it is near. Said Jesus: “There shall be signs in the sun, and in the moon, and in the stars.” Luke 21:25 . “The sun shall be darkened, and the moon shall not give her light, and the stars of heaven shall fall, and the powers that are in heaven shall be shaken. And then shall they see the Son of man coming in the clouds with great power and glory.” Mark 13:24-26 . The revelator thus describes the first of the signs to precede the second advent: “There was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood.” Revelation 6:12 . GC 304.1"
"And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring;"
Ellen White directly references Luke 21:25 in this passage.
"But in those days, after that tribulation, the sun shall be darkened, and the moon shall not give her light, And the stars of heaven shall fall, and the powers that are in heaven shall be shaken. And then shall they see the Son of man coming in the clouds with great power and glory."
Ellen White directly references Mark 13:24-26 in this passage.
"And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;"
Ellen White directly references Revelation 6:12 in this passage.
"Europe. A great part of Algiers was destroyed; and a short distance from Morocco, a village containing eight or ten thousand inhabitants was swallowed up. A vast wave swept over the coast of Spain and Africa engulfing cities and causing great destruction. GC 304.2"
"For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places."
Both passages describe natural disasters as signs of the end times. The EGW passage describes specific events like the destruction in Algiers and the wave in Spain and Africa, while Matthew 24:7 speaks generally of 'famines, and pestilences, and earthquakes, in divers places.'
"Men’s hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken."
Both passages relate to the fear and anxiety that will accompany the events leading up to the end times. The EGW passage describes a destructive event, while Luke 21:26 speaks of 'men's hearts failing them for fear.'
"It was in Spain and Portugal that the shock manifested its extreme violence. At Cadiz the inflowing wave was said to be sixty feet high. Mountains, “some of the largest in Portugal, were impetuously shaken, as it were, from their very foundations, and some of them opened at their summits, which were split and rent in a wonderful manner, huge masses of them being thrown down into the subjacent valleys. Flames are related to have issued from these mountains.”—Sir Charles Lyell, Principles of Geology, page 495. GC 304.3"
"And there were voices, and thunders, and lightnings; and there was a great earthquake, such as was not since men were upon the earth, so mighty an earthquake, and so great."
Both passages describe a great earthquake with significant geological consequences. The EGW passage describes the Lisbon earthquake and its effects, while Revelation 16:18 speaks of 'a great earthquake, such as was not since men were upon the earth.'