Rubbish! QUOTE where <<the Sabbath law is applied by God to VARIOUS days>>!
QUOTE where <<God's immutalbe Law … demands more extensive application than…>>, quote, “the day The Seventh Day”!
That <<the Sabbath law is applied to other days besides the "seventh" day by God (Lev. 23)>> is YOUR, plain, obvious, screaming, falsity. It is no <<fact>> in the least, but YOUR, false claim which ITSELF, destroys your whole concocted contention that the Sabbath Law must not be restricted to GOD’S making and institution of the seventh day of the creation AND SALVATION-week IN CHRIST, AS:- “the day The Seventh Day Sabbath OF THE LORD GOD”.
3 Six days shall work be done: but the seventh day is the sabbath of rest, an holy convocation; ye shall do no work therein: it is the sabbath of the LORD in all your dwellings.
7 In the first day ye shall have an holy convocation: ye shall do no servile work therein.
8 But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.
21 And ye shall proclaim on the selfsame day, that it may be an holy convocation unto you: ye shall do no servile work therein: it shall be a statute for ever in all your dwellings throughout your generations.
24 Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation....30 And whatsoever soul it be that doeth any work in that same day, the same soul will I destroy from among his people.
31 Ye shall do no manner of work: it shall be a statute for ever throughout your generations in all your dwellings.
32 It shall be unto you a sabbath of rest, and ye shall afflict your souls: in the ninth day of the month at even, from even unto even, shall ye celebrate your sabbath.
35 On the first day shall be an holy convocation: ye shall do no servile work therein.
36 Seven days ye shall offer an offering made by fire unto the LORD: on the eighth day shall be an holy convocation unto you; and ye shall offer an offering made by fire unto the LORD: it is a solemn assembly; and ye shall do no servile work therein
39 Also in the fifteenth day of the seventh month, when ye have gathered in the fruit of the land, ye shall keep a feast unto the LORD seven days: on the first day shall be a sabbath, and on the eighth day shall be a sabbath.
4 But in the seventh year shall be a sabbath of rest unto the land, a sabbath for the LORD: thou shalt neither sow thy field, nor prune thy vineyard.
5 That which groweth of its own accord of thy harvest thou shalt not reap, neither gather the grapes of thy vine undressed: for it is a year of rest unto the land.
In Leviticus chapter 23 the words "it is an holy convoction" is synonmous with "it is a Sabbath" as both are kept in the very same manner - no work shall be done in that day.
The fact is that the SABBATH LAW which prohibits work done in that day is applied by God to many different days as well as different years.