B'resheet 2:1-3 Thus the heavens and the earth were completed, and all their hosts. And by the seventh day G-d completed His work which He had done; and He rested on the seventh day from all His work which He had done. Then G-d blessed the seventh day and sanctified it, because in it He rested from all His work which G-d had created and made.
In these verses we see it stressed that G-d finished all creation in 6 days.
G-d did not rest because he was tired after creating the universe. He rested as an example for us to follow. We need to rest.
Yeshua tells us in Mark 2:27 ... "The Sabbath was made for man, and not man for the Sabbath."
HaShem sanctified the Sabbath. (Saturday)
Sanctified - this comes from the Hebrew word "qadash" meaning "Holy" or "set apart".
Have you ever wondered why there are seven days in a week? G-d established the seven-day week, not man. Week after week we celebrate His creative work.
Consider how much we are able to accomplish even in our best week. Then compare it to what G-d was able to do in the same time span. His omniscience (all-knowing), omnipotence (all-powerful), and omnipresence (all-present) should become clear.
Jeremiah 32:17 'Ah L-rd G-D! Behold, Thou hast made the heavens and the earth by Thy great power and by Thine outstretched arm! Nothing is too difficult for Thee,
Psalms 104:24 O L-RD, how many are Thy works! In wisdom Thou hast made them all; the earth is full of Thy possessions.
This is the only time in all of scripture that we see G-d resting.
Hebrews 1:1-3 "G-d, after He spoke long ago to the fathers in the prophets in many portions and in many ways, in these last days has spoken to us in His Son, whom He appointed heir of all things, through whom also He made the world. And He is the radiance of His glory and the exact representation of His nature, and upholds all things by the word of His power. When He had made purification of sins, He sat down at the right hand of the Majesty on high;"
Here we learn that G-d holds the universe together by His word and we know the Yeshua is the Word.
John 1:1-3 In the beginning was the Word, and the Word was with G-d, and the Word was G-d. He was in the beginning with G-d. All things came into being by Him, and apart from Him nothing came into being that has come into being.
Therefore we can safely conclude that Yeshua not only created the Universe but He continues to hold the Universe together.
Colossians 1:16-17 For by Him all things were created, both in the heavens and on earth, visible and invisible, whether thrones or dominions or rulers or authorities-- all things have been created by Him and for Him. And He is before all things, and in Him all things hold together. NAS
The day of physical rest represents the redemptive rest that HaShem desires for each of us.
Hebrews 4:1-5 Therefore, let us fear lest, while a promise remains of entering His rest, any one of you should seem to have come short of it. For indeed we have had good news preached to us, just as they also; but the word they heard did not profit them, because it was not united by faith in those who heard. For we who have believed enter that rest, just as He has said, "As I swore in My wrath, They shall not enter My rest, "although His works were finished from the foundation of the world. For He has thus said somewhere concerning the seventh day, "And G-d rested on the seventh day from all His works"; and again in this passage, "They shall not enter My rest."
Rest comes when we trust in what His son did for us, not anything we did for us. Peace comes from trusting in Him and not in ourselves. He brings peace between G-d and man for eternity. He is the peace that passes all understanding.
The seventh day also symbolizes the 1000-year (millennial) rest of Yeshua HaMashiach.
Revelation 20:6 Blessed and holy is the one who has a part in the first resurrection; over these the second death has no power, but they will be priests of G-d and of Messiah (Christ) and will reign with Him for a thousand years.
Sabbath - means to rest or cease from work.
Later the day was set aside under Mosaic Law as a day to worship HaShem (See Ex 20:8-11)
Early believers in Yeshua began worshiping HaShem on the 8th (new beginnings) day of the week to celebrate the resurrection of Yeshua HaMashiach.
Acts 20:7 And on the first day of the week, when we were gathered together to break bread, Paul began talking to them, intending to depart the next day, and he prolonged his message until midnight. NAS
Under Brit Hadashah (the New Covenant) there is no command regarding which day to worship HaShem.
Colossians 2:16 Therefore let no one act as your judge in regard to food or drink or in respect to a festival or a new moon or a Sabbath day.