This section of Scripture concludes a chiastic structure begun in Emor:
Surrounding the proclamation of death for those who do not leave Egypt, that is, the kingdom of darkness, is the law of the Sabbath, and the law of the Sabbaths. Sabbath is a beautiful picture of rest in Messiah, of grace through faith: Israel has to exercise faith and trust in YHVH to not work on the seventh day, to not sow their fields in the seventh year, and to cancel debts in the Jubilee. The seventh day, the seventh year, and the Jubilee, all the Sabbaths, prophesy of the seventh millennium of REST we will enjoy under the kingship of Messiah Yeshua. Not only that, but the law of the Jubilee is literally the law of redemption from bondage.
Can the Scripture speak any more plainly? The physical structure of this chiasm is proclaiming death swallowed up in life, in Messiah, in grace, in rest, in not working to earn salvation; in trust, in faith, in honor and obedience of YHVH for He is God. Yes, obedience walks hand in hand with faith and rest!
The law of the Sabbath is the law of grace, in other words!