the true Sabbath is only in the Messiah I agree, however it starts in the Sabbath millenium...
The MEssiah was born on the 4th millenium, the sun was created in the 4th day... then:
Hosheyah 6:1-3, “Come, and let us turn back to יהוה. For He has torn but He does heal us, He has stricken but He binds us up. After two days He shall revive us, on the third day He shall raise us up, so that we live before Him. So let us know, let us pursue to know יהוה. His going forth is as certain as the morning. And He comes to us like the rain, like the latter rain watering the earth.”
"After two days He shall revive us, on the third day He shall raise us up"
4+3=7...
the 7th "day"
2 Peter 3:8, “But, beloved ones, let not this one matter be hidden from you: that with יהוה one day is as a thousand years, and a thousand years as one day.”
Is this:
Rev 20:4-6, "And I saw thrones – and they sat on them, and judgment was given to them – and the lives of those who had been beheaded because of the witness they bore to יהושע and because of the Word of Ylohim, and who did not worship the beast, nor his image, and did not receive his mark upon their foreheads or upon their hands. And they lived and reigned with Messiah for a thousand years and the rest of the dead did not come to life until the thousand years were ended) – this is the first resurrection. Blessed and set-apart is the one having part in the first resurrection. The second death possesses no authority over these, but they shall be priests of YHWH and of Messiah, and shall reign with Him a thousand years."