Firstly - you can see he created the day called the Sabbath in the beginning - GEN 2:1-3.
Then it is brought up again in Exodus 20: 8-11 - this is the best part -
(Bishops) Remember the sabboth day that thou sanctifie it.
(KJV+) Remember the sabbath day, to keep it holy.
(MKJV) Remember the Sabbath day, to keep it holy.
(Webster) Remember the sabbath-day to keep it holy.
They all say REMEMBER.....and no other commandment says this - also note it also give an in depth description about the meaning and the rest are short.
Next - how it mentions of it being a SIGN between you and God:
Exodus 31:13 -17 & Ezekiel 20:12,20
Then the church will say - This only applied to the Jews and not us.... how wrong they are - Mark 2:27 -29:
Mar 2:27 And He said to them, The sabbath came into being for man's sake, and not man for the sabbath's sake.
Mar 2:28 Therefore the Son of Man is also Lord of the sabbath.
For MAN's Sake - it never said for the Jews sake!
ok - so lets say it was just taken away for us - it was there in the beginning and not now --- BUT then why is it in the new heaven and new earth later??
Isaiah 66:22,23 ?? And it will be, from one new moon to another, and from one sabbath to another, all flesh will come to worship before Me, says Jehovah.
???? So there you have it - a simple version of the Truth on the Sabbath day..... Next up - why on a Saturday and not Sunday? why do 90% of the Churches keep the Sunday and not Sabbath?