Ummm, no. It is historically used as literal keeping of sabbath in every known instance:
Hebrews 3-4 (among many others; John 14:15; Exodus 20:6; Isaiah 56:1,8; John 10:16; Isaiah 56:2-7, Acts 4:24, 14:15; Revelation 10:6, 14:6-7, &c).
Hebrews 3-4 is clear.
Hebrews 4:3, "my (God's) rest" and "the works were finished from the foundation of the world", which is a direct reference to Genesis 2:1-3. It even uses the word "finished". God rested the 7th day in Genesis 2:1-3. It is His rest, the 7th day, the sabbath (rest) of the LORD thy God, Exodus 20:8-11.
Hebrews 4:4, "he spake in a certain place of the seventh day on this wise, And God did rest the seventh day from all his works", which "certain place" is Genesis 2:1-3; re-cited in Exodus 20:8-11. The 7th day the sabbath (rest) of the LORD thy God.
Hebrews 4:5, "my (God's) rest)", citing Psalms 95, which is citing Genesis 2:1-3; Exodus 20:8-11, etc. Again, this is the 7th day the sabbath (rest) of God at Creation in Genesis 2:1-3.
Hebrews 4:6, "remaineth", from when? "from the foundation of the world" as per Hebrews 4:3 and thus it is not new, but has been around from the beginning.
Hebrews 4:9, "rest", sabbatismos, literally and truly sabbath keeping in scripture and in all known extant Greek sources, dictionaries, and so on and again "remaineth".
Hebrews 4:10, "his (God's) rest", which is the 7th day the sabbath (rest) of the LORD thy God from Genesis 2:1-3., "as God did from his (works)", which "works were finished from the foundation of the world" as per Hebrews 4:3.
Hebrews 4:11, "that rest" (ie God's rest), the 7th day the sabbath (rest) of the LORD thy God.
Wrong. As I already explained in post #34. Hebrews 4:9 - So there remains a Sabbath rest for the people of God. (NASB) Notice that the Greek word
"sabbatismos" here is used no where else in the Bible! SDA's suggest that this is the word for "keeping the weekly Sabbath" when it is never used anywhere else in the Bible!
W. E. Vine, Greek Dictionary points out:
Sabbath rest (4520) (sabbatismos from sabbatízo = keep the Sabbath) literally means a keeping of a sabbath or a keeping of days of rest. It is used in this passage not in the literal sense (meaning to keep a specific day, the "Sabbath" day) but to describe a period of rest for God’s people which is modeled after and is a fulfillment of the traditional Sabbath.
SABBATISMOS a Sabbath-keeping, is used in Heb. 4:9, R.V., "a Sabbath rest," A.V. marg., "a keeping of a Sabbath" (akin to sabbatizoµ, to keep the Sabbath, used, e.g., in Ex. 16:30, not in the N.T.);
here the Sabbath-keeping is the perpetual Sabbath rest to be enjoyed uninterruptedly by believers in their fellowship with the Father and the Son, in contrast to the weekly Sabbath under the Law. Because this Sabbath rest is the rest of God Himself, its full fruition is yet future, though believers now enter into it. In whatever way they enter into divine “rest,” that which they enjoy is involved in an indissoluble relation with God. (Vine's Expository Dictionary of New Testament Words)
http://www.sermonindex.net/modules/articles/index.php?view=article&aid=35458
Hebrews 4:10 says the one who has entered His rest has himself also rested from his works, as God did from His. That person has entered in God’s rest through Jesus "rests from his own work" (in contrast of trying to keep the Law) as God ceased or rested from His works in the seventh day of Creation. God's ultimate, true rest did not come through Joshua or Moses, but through Jesus Christ. Joshua led Israel into the promised land, which was merely the earthly rest which was but a shadow of what was involved in the heavenly rest. The rest in Christ that God offers is spiritual and is superior to that which Joshua obtained. Israel's earthly rest was filled with conflict and attacks from their enemies and the daily cycle of work. The "sabbatismos" rest enjoyed uninterruptedly by believers in their fellowship with the Father and the Son, in contrast to the weekly Sabbath under the Law, is found only in Christ and not Law keeping.
Although for centuries the Jews had found their physical rest in a day, the New Covenant takes the focus off the shadows of the Old Testament signs and rituals and reveals their spiritual substance --
the fulfillment/reality—in the person of Jesus Christ. (Colossians 2:16-17) Christians find complete Sabbath "sabbatismos" rest in Christ's finished work on the cross. The New Testament Sabbath rest is entered into by ceasing from one’s "works" of trying to earn salvation though keeping the Law. Paul explains that the Jewish holy days, including the weekly Sabbath, were merely a “shadow” which pointed to Christ; therefore, Christians should not feel obligated to observe them once the “reality” has come (Colossians 2.16-17). Because Jesus and the New Testament writers never reiterate the Sabbath command as they do the moral principles contained in the other 9 commandments, Christians are not obligated to observe a literal weekly Sabbath day.
The Greek word sabbatismos occurs only once in the Bible: "There remains, then, a Sabbath-rest [sabbatismos] for the people of God; for anyone who enters God's rest also rests from his own work, just as God did from his. Let us, therefore, make every effort to enter that rest, so that no one will fall by following their example of disobedience" Hebrews 4:9-11, NIV.
http://www.sabbatismos.com/#sthash.ICZ7XtGk.dpbs
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I sincerely hope and pray that you find your way out of the SDA cult. 
