A NT text often quoted by many without any true idea of the implications of what Jesus was actually saying, is...
KJV Mark 2:27-28
27 And he said unto them, The sabbath was made for man, and not man for the sabbath:
28 Therefore the Son of man is Lord also of the sabbath.
Three questions...
When was the Sabbath made?
For God alone it was made in Genesis 1.
God.
And for Whom was it made?
Man, for the first time in Exodus 16.
The Sabbath originally was just for the Jews. Eventually the covenant was broken and a long time later God instituted a new covenant first offered to Jews who would accept Christ, then to the rest of the world. All who would accept Christ ie: Christians, would have a new covenant and thus a new Sabbath for rest. It became a spiritual rest rather than a certain day where one rested. A Christian has this spiritual Sabbath always because Christ gives us rest every day. We can also take literal rest from work on any day since Christ is the current concept of a Sabbath.
Mat 11:28 Come unto me, all ye that labour and are heavy laden, and
I will give you rest.
Mat 11:29 Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls.
Mat 11:30 For my yoke is easy, and my burden is light.
Christ is our Sabbath rest now.
Col 2:16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon,
or of the Sabbath:
Col 2:17
Which are a shadow of things to come; but the body is of Christ.
The Sabbath was one of many things that were shadows of things to come which means they would be fulfilled and replaced with something much greater.
Heb 4:7 Much later God told David to make the promise again, just as I have already said, "If you hear his voice today, don't be stubborn!"
Heb 4:8 If Joshua had really given the people rest, there would not be any need for God to talk about another day of rest.
Heb 4:9 But
God has promised us a Sabbath when we will rest, even though it has not yet come.
Heb 4:10 On that day God's people will rest from their work, just as God rested from his work.
Heb 4:11
We should do our best to enter that place of rest, so that none of us will disobey and miss going there, as they did.
Here the Sabbath is different and is spoken as a place of rest, the eternity, when we will rest from all the struggles of life, sin and any hardships. It has not yet come, "even though it has not yet come".