Gen 2:1-3, 1 Thus the heavens and the earth, and all the host of them, were finished. 2…and He rested on the seventh day from all His work which He had done. 3 Then God blessed the seventh day and sanctified it, because in it He rested from all His work which God had created and made.
The heavens, the earth’s and all creatures were created and completed on the 6th day. On the 7th day God rested. God’s rest was not from weariness, or exhaustion, but because His work of creation was finished and was pleased. So perfect is God’s work that nothing can be added to it or taken from it (Ecc 3:14) and His work displays His glory in the natural, Psa 19:1 “The heavens declare the glory of God; And the firmament shows His handiwork“
The need for hard work is exhibited for our learning of God as the creator and our human responsibilities to tend to His creation. Adam’s duty was to tend to the garden as work was not a result of the fall to be despised. The very God who ordained work likewise set a day of holy rest and holy work to His honor. The sabbath day (7th day) is a blessed day, for God blessed and sanctified it. God has put an honor upon it and has appointed us on that day to acknowledge Him and bless Him, and He has promised to meet us and bless us. While we acknowledge Him every day, when we set this day aside, we enter into His rest spiritually and physically, and we cease to worry because we trust Him in all and for all. This truth is so needed now when mankind has a strong tendency to forget his creator, God, His claims, His providence, His wisdom, His assembly. The need for work and rest was God’s invention, let’s not despise them.