I am not arguing against myself. I am arguing against your statements such as this

o you now agree that sabbatismos has application of keeping the sabbath through resting? It is incorrect to say keeping "the" sabbath.
Sorry, once again I respectfully disagree with your claims as your trying to make many arguments no one is making with you. Perhaps I did not use the best choice of words and some of the references I used may have helped to provide misunderstanding. If that is the case I will try and add more clarification here. I think enough evidence has been provided throughout this thread proving beyond doubt that Hebrews 4:9 is in reference to “Sabbath keeping” or “Sabbath observance” that is left behind for all those who believe and follow Gods’ Word. Just wanting to summarise a few points and add some clarification to help discussions.
1, As posted from the beginning, I have never argued for definite article to sabbatismos and an indefinite argument does not change the overall context and interpretation of Hebrews 4:1-9. I have never made any arguments that sabbatismos does not mean "a sabbath rest" and have already said it does.
It also means "a sabbath observance" or "a keeping of a sabbath through resting" already shown through the Greek. I have provided some Syriac translations that use "
a keeping of the Sabbath" (Aramaic and Lasma) and the Historical use of sabbatizo in the Septuagint which always translates to sabbath keeping or sabbath observance through resting.
I have never said the words used in
Hebrews 4:9 has definite article and an indefinite article to "a Sabbath keeping through resting does not change the word meanings or definitions. I have only provided the Aramiac or Syriac translations that both use "
the Sabbath" translation in support with other evidence that is supportive how how the believers at that time interpreted Sabbatismos as "sabbath keeping".
2, The literal Greek meaning of Sabbatismos is to keeping a sabbath through resting. I have never made arguments in support of "a" Sabbath vs "the" Sabbath or Sabbath rest vs keeping a Sabbath or keeping the Sabbath and stated all views from the beginning. So this is only a distraction to my original post. None of the above effects the contexts already provided in Hebrews 3:8-19 and Hebrews 4:1-11. Which defines our rest through believing and following God's Word in Hebrews 4:1:3 and God's rest that those who believe and follow Gods' Word enter into in Hebrews 4:3-4 that defines God's rest as the seventh day Sabbath referring back to Genesis 2:1-3.
3. The literal meaning of sabbatismos from various Greek dictionaries, Interlinear and Lexicons have been provided showing the literal Greek meanings of Sabbatismos to Sabbath observance or keeping of a/the Sabbath (I am not arguing a/the or definite or indefinite article just showing the different reference below and application to “
Sabbath keeping or Sabbath observance with collective evidence” (through resting) as shown in...
GREEK INTERLINEAR
HEBREWS 4:9 άρα (Then) απολείπεται (there is left) σαββατισμός (
a Sabbath keeping) τω (to the) λαώ (people) του θεού (of God)
GREEK LEXICON OF THE NEW TESTAMENT, Abbott-Smith - G4520
*† σαββατισμός, - οῦ, ὁ
(< σαββατίζω,
to keep the sabbath, Exod 16:30, al.),
a keeping sabbath, a sabbath rest: metaph., as in Mishna (Zorell, s.v.), Heb 4:9.†
LIDDEL/SCOTT/JONES GREEK-ENGLISH LEXICON - G4520
σαββατισμός
Σαββᾰτ-ισμός, ὁ,
a keeping of days of rest, Ep. Heb 4:9, cf. Plu. 2.166a (codd., βαπτισμούς Bentley).
STRONGS LEXICON
So ἄρα (
ara) Conjunction
Strong's Greek 686: Then, therefore, since. Probably from airo; a particle denoting an inference more or less decisive. there remains ἀπολείπεται (
apoleipetai) Verb - Present Indicative Middle or Passive - 3rd Person Singular
Strong's Greek 620: From apo and leipo; to leave behind; by implication, to forsake. a Sabbath rest σαββατισμὸς (
sabbatismos) Noun - Nominative Masculine Singular
Strong's Greek 4520: A keeping of the Sabbath, a Sabbath rest. From a derivative of sabbaton; a 'sabbatism', i.e. the repose of Christianity. for the τῷ (
tō) Article - Dative Masculine Singular
Strong's Greek 3588: The, the definite article. Including the feminine he, and the neuter to in all their inflections; the definite article; the. people λαῷ (
laō) Noun - Dative Masculine Singular
Strong's Greek 2992: Apparently a primary word; a people. of God. Θεοῦ (
Theou) Noun - Genitive Masculine Singular
Strong's Greek 2316: A deity, especially the supreme Divinity; figuratively, a magistrate; by Hebraism, very.
STRONGS CONCORDENCE
sabbatismos: a sabbath rest Definition: a sabbath rest Usage (DOING):
a keeping of the Sabbath, a Sabbath rest.
GREEK-ENGLISH LEXICON OF THE NEW TESTAMENT. THAYER - G4520
G4520 — σαββατισμός
σαββατισμου, ὁ (σαββατίζω
to keep the sabbath);
W. E. VINE, GREEK DICTIONARY
Sabbath rest (4520) (sabbatismos from sabbatízo = keep the Sabbath)
literally means a keeping of a sabbath or a keeping of days of rest. (Note the rest of Vines comments is not the Greek it is his opinion)
more to follow...