Genesis doesnt mention 'Sabbath'.
Your only trying to change the subject now which was that the Sabbath was made for all of mankind not just the Jews as shown in * Mark 2:27
GENESIS does indeed mention the SABBATH. Let's look at the scriptures...
The ORIGIN of the SABBATH is from the SEVENTH DAY of the CREATION WEEK and can be shown from
GENESIS 2:1-3 [1], Thus the heavens and the earth were finished, and all the host of them. [2], And ON
THE SEVENTH DAY God ended his work which he had made; and he
RESTED [שׁבת; shâbath H7673; Keep Sabbath] on the
SEVENTH DAY from all his work which he had made. [3], And
GOD BLESSED THE SEVENTH DAY AND MADE IT HOLY: because that in it he had
RESTED [שׁבת; shâbath H7673; Keep Sabbath] from all his work which God created and made.
The Hebrew word for
RESTED used here is
שׁבת; shâbath (H7673). It's meaning is; to repose, that is, desist from exertion; used in many implied relations (causatively, figuratively or specifically): - (cause to, let, make to) cease, celebrate, cause (make) to fail,
KEEP SABBATH, suffer to be lacking, leave, put away (down), (make to) rest, rid, still, take away.
שׁבת; shâbath (H7673) is the ORIGIN or ROOT word for
שׁבּת; shabbâth (H7676).
shabbâth meaing is the intermission between SABBATHS and the continuation meaing from one SABBATH to the Next SABBATH continuation or EVERY SABBATH. It's application is in EXODUS 20:8 to REMEMBER [EVERY] Sabbath [
shabbâth H7676]
This links GENESIS 2:1-3 above with EXODUS 20:8-11 which is God's 4th Commandment which says...
EXODUS 20:8-11 [8],
Remember the SABBATH DAY, to keep it holy [Made Holy at creation GENESIS 2:3]. [9], Six days shall you labor, and do all your work: [10], But
THE SEVENTH DAY [ Genesis 2:1-3] IS THE SABBATH OF THE LORD YOUR GOD : in it you shall not do any work, you, nor your son, nor your daughter, your manservant, nor your maidservant, nor your cattle, nor your stranger that is within your gates:
[WHY?] [11],
For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: why the LORD blessed the sabbath day, and hallowed it. [GENESIS 2:1-3]
GENESIS 2:1-3 is INDEED the ORIGIN of the SABBATH (First Sabbath). It is the SEVENTH DAY of creation that God blessed, set apart and made a HOLY DAY for all mankind. Nearly every section of GENESIS 2:1-3 is repeated in EXODUS 20:8-11 of God's 4th commandment as the reason why we are to REMEMBER God's Sabbath.
Jesus says it was made for mankind; human beings, not Jews.
MARK 2:27 [27], And he said to them, The sabbath was made for man [G444 ἄνθρωπος mankind; human beings], and not man for the sabbath
Hope this helps
.