When the Sabbath comes into being has been a matter of much debate, and its origin of the Sabbath has been put at various times in the Bible by some and many try to argue that the Sabbath originated at the time of Moses. You can see why the question of the origin of the Sabbath has attracted much attention, as it is goes toward the larger question of whether or not the principle and practice of seventh-day Sabbath keeping is binding upon Christians. So lets look at Creation and see what it has.
Genesis 2:1-4
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 on the seventh day from all his work which he had made.
3 And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.
4 These are the generations of the heavens and of the earth when they were created, in the day that the Lord God made the earth and the heavens,

Verse 1 and 4 makes clear when the origin happened, as it was after man was made and all the work of creation finished, which helps in understanding that the Sabbath was established by God at creation for the benefit of mankind, which would make its observance as a creation ordinance binding upon all, Jews and Christians.

if we look at verse 2 and 3 we find in the verses that the Biblical view of the origin of the Sabbath is unequivocal: the Sabbath, as seventh day, originated at the completion of the creation week as a result of three divine acts: God "rested," "blessed," and "hallowed" the seventh day.

Twice we see that it states that God "rested" on the seventh day from all His work. The Hebrew verb shabat, translated "rested," denotes cessation and not relaxation. Now in Exodus 20:11 the idea of rest is expressed by the Hebrew verb nuah, which is used, is as where the divine rest fulfills an anthropological function: it serves as a model for human rest. In Genesis 2:2-3 however, the divine rest has a lager function as it serves to explain that God was content to be the Creator of this world and did not need to proceed to further creations here on the earth, it ended at that point. To acknowledge this fact, God stopped or ceased.

Genesis 2:2 affirms that the Creator "blessed" (brk) the seventh day just as He had blessed animals and man on the previous day. Divine blessings in the Scripture are not merely "good wishes," but assurance of fruitfulness, prosperity, and a happiness in life. In terms of the seventh day, it means that God has promised to make the Sabbath a beneficial and vitalizing power through which human life is enriched and renewed. In Exodus 20:11 the blessing of the creation seventh day is clearly linked with the weekly Sabbath, and the same rest.

Exodus 20:10-11
10 But the seventh day is the sabbath of the Lord thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:
11 For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day, and hallowed it.

The theological reasons given for the command to observe the seventh day Sabbath in verse 10 "to the Lord your God" is "for in six days the Lord made heaven and earth, the sea, and all that is in them and rested the seventh day; therefore the Lord blessed the Sabbath day and hallowed it" in verse 11. Notice it clearly repeats the same as Creation, God "rested," "blessed," and "hallowed" the seventh day. It clearly was created or "made" as Christ says, and we see He declares it was made for man, or all humankind.

Mark 2:27
And he said unto them, The sabbath was made for man, and not man for the sabbath:

By the Creator Himself..

Here is a good explanation I came across on the creation of the Sabbath...

"As a memorial of His great creation, God created the Sabbath by resting on the seventh day (Genesis 2:1-3). Like placing a capstone on everything He had made, God's creation of the Sabbath serves as a continual reminder that He is the great Creator. The Sabbath is a great blessing to mankind (Mark 2:27), as it keeps us constantly aware that God's greatest work is not the completed, physical creation but the ongoing, spiritual creation of Himself in us...

Genesis 2:2

God rested on the seventh day of creation. The word "rested" here comes from the Hebrew word shabath (Strong's 7673), which can mean "to keep or to observe the Sabbath." This word is the root for the word shabbath (Strong's 7676), which is translated as "Sabbath" throughout the Old Testament.
God rested upon, or kept, the Sabbath on this first seventh day, not because He physically tired after all His creation work, but to set an example for Adam, Eve, and all humanity after them to do the same.
Some say that only that very first seventh day was made a day of rest by God and not all of the other seventh days since. Moses refutes this in Exodus 20:11 by commanding the Israelites to keep the Sabbath, not because they were Israelites, but because God had rested upon and sanctified the seventh day at Creation.
The evening of the sixth day of creation was not the end of God's work; Jesus says in John 5:17 that both He and His Father continue to work. Just one part of their "work" is the sustaining and maintaining of the operation of the universe. If they withdrew that "work," the whole physical universe would come to a sudden and complete end!" ... What the Bible says about Sabbath as Memorial of Creation

The Sabbath is memorial of Creation.
To worship God on the Sabbath is remembering that He is our Creator.
It is because God is our Creator that He is worthy of our worship.


God explicitly tells us that He blessed and sanctified a specific day as the memorial of His creation, and asks us to remember that day, because He created us.

Revelation 14:7 Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven and earth, and the sea, and the fountains of waters.

Psalms 100:3-4 Know ye that the LORD he is God: it is he that has made us, and not we ourselves; we are his people, and the sheep of his pasture. Enter into his gates (come to His place of worship) with thanksgiving, and into his courts with praise: be thankful unto him, and bless his name.

Gen. 2:2-3 And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made. And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.

Psalms 148:5 Let them praise the name of the LORD: for he commanded, and they were created.

Revelation 4:11 Thou art worthy, O Lord, to receive glory and honour and power: for thou hast created all things, and for thy pleasure they are and were created.

Isaiah 45:18 For thus saith the LORD that created the heavens; God himself that formed the earth and made it; he has established it, he created it not in vain, he formed it to be inhabited: I am the LORD; and there is none else.
45:20 Assemble yourselves and come; draw near together,... they that set up their graven image, and pray unto a god that cannot save have no knowledge.
45:22 Look unto me, and be ye saved, all the ends of the earth: for I am God, and there is none else.
45:23 I have sworn by myself, the word is gone out of my mouth in righteousness, and shall not return, That unto me every knee shall bow, every tongue shall swear.

Exodus 20:8 Remember the sabbath day, to keep it holy.
20:9 Six days shalt thou labour, and do all thy work:
20:11 For in six days the LORD made heaven and earth, the sea, and all that in them [is], and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.