Is your foundational belief how humans have grown in knowledge?
The Bible is, This special book tells divine concept that absolutely Humans could never be able to imitate.
How can in this earth: there is a very special species with exponentially growth in knowledge among others with absolutely none ?, if they all came from one ancestor ( there surely were many species with relatively same growth in knowledge , right ?).
The hidden message about Sabbath law have already been introduced far before mankind fell ( Gen2:3) let’s look at Rom8:20 , If this book just a man made product ,how could man in that age create such this great concept ?.
Rom8:20
For the creature was made subject to vanity, not willingly, but by reason of him who hath subjected the same in hope
How can “salvation is by God Grace alone “ apply ?
Mankind were driven out from Eden just for this reason: that to keep them to not eat the fruit of the tree of life intentionally, this meant: man surely ate that fruit if they were let in Eden right ?, how could they be given a standard of life that they should obey where it consisted of hundreds of law ( Torah laws ) , which one the easiest to be fulfilled ?
By this standard of life, did not it lead us to realize that ”we shall never be able to fulfill the laws “ ?, or in other word there shall apply a premise that
Salvation is by God Grace alone or shall apply the Sabbath law in the spiritually meaning ?.
There are bunch divine concept that lead us to see God the almighty one, the alpha and omega, that finally we surely can glorify Him ( the purpose of creation ).