"In Revelation 14 , men are called upon to worship the Creator; and the prophecy brings to view a class that, as the result of the threefold message, are keeping the commandments of God. One of these commandments points directly to God as the Creator. The fourth precept declares: “The seventh day is the Sabbath of the Lord thy God: ... for in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the Sabbath day, and hallowed it.” Exodus 20:10, 11 . Concerning the Sabbath, the Lord says, further, that it is “a sign, ... that ye may know that I am the Lord your God.” Ezekiel 20:20 . And the reason given is: “For in six days the Lord made heaven and earth, and on the seventh day He rested, and was refreshed.” Exodus 31:17 . GC 437.1"
"And hallow my sabbaths; and they shall be a sign between me and you, that ye may know that I am the Lord your God."
Ellen White directly references Ezekiel 20:20 in this passage.
"It is a sign between me and the children of Israel for ever: for in six days the Lord made heaven and earth, and on the seventh day he rested, and was refreshed."
Ellen White directly references Exodus 31:17 in this passage.
“The importance of the Sabbath as the memorial of creation is that it keeps ever present the true reason why worship is due to God”—because He is the Creator, and we are His creatures. “The Sabbath therefore lies at the very foundation of divine worship, for it teaches this great truth in the most impressive manner, and no other institution does this. The true ground of divine worship, not of that on the seventh day merely, but of all worship, is found in the distinction between the Creator and His creatures. This great fact can never become obsolete, and must never be forgotten.”—J. N. Andrews, History of the Sabbath, chapter 27. It was to keep this truth ever before the minds of men, that God instituted the Sabbath in Eden; and so long as the fact that He is our Creator continues to be a reason why we should worship Him, so long the Sabbath will continue as its sign and memorial. Had the Sabbath been universally kept, man's thoughts and affections would have been led to the Creator a…
"For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day, and hallowed it."
Both passages connect the Sabbath with God as Creator and the importance of remembering this fact for worship. While EGW doesn't directly quote Exodus 20:11, she builds upon the principle it establishes.
"Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters."
Both passages emphasize worshiping God as the Creator. Revelation 14:7 is a direct call to worship the Creator, and EGW uses this concept to explain the importance of the Sabbath as a memorial of creation and a foundation for worship.