Exod 31:16 Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, [for] a perpetual covenant. It [is] a sign between me and the children of Israel for ever: for [in] six days Yahweh made heaven and earth, and on the seventh day he rested, and was refreshed.
The Sabbath is forever for everyone; Yahweh's people will keep it, others may rebel:
Deut 5:29 Oh, that their hearts would be inclined to fear me and keep all my commands always, so that it might go well with them and their children forever! [This would imply keeping the commandments forever.]
Psal 119:152 Long ago I learned from your statutes that you established them to last forever. [Yahweh's rules are still to be kept. See: Then why does it say we are "not under" the law?] Yahweh / torah / Jew / commandment / Sabbath / Yahweh