there doth remain, then, a sabbatic rest to the people of God, Hebrews 4:9
And God saw every thing that he had made, and, behold, it was very good. And the evening and the morning were the sixth day. Gen 1:29
The creation and things being made is complete.
for to vanity was the creation made subject -- not of its will, but because of Him who did subject it -- in hope, Rom 8:20 also read verses 24,25 for in hope we were saved, and hope beheld is not hope; for what any one doth behold, why also doth he hope for it? and if what we do not behold we hope for, through continuance we expect it.
What followed the sixth day?
Thus the heavens and the earth were finished, and all the host of them. And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made. And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made. Gen 2:1-3
Does the hope of verse 20 have anything to do with the people of God entering into the rest of God?
Also consider:
And not only so, but also we ourselves, having the first-fruit of the Spirit, we also ourselves in ourselves do groan, adoption expecting -- the redemption of our body; Romans 8:23
Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years. Rev 20:6
Is, "the first resurrection," the redemption of the body? Is that thousand years, the day of the Lord and or the Lord's day of Rev 1:9? Entering His rest?