The Bible tells us that God implemented the Sabbath day, at the time of creation as a memorial to his wondrous work. It says, 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.
This shows clearly that at the beginning of time the seventh day was the day set apart by God as His Sabbath. This was later reiterated on Mount Sinai when He wrote the Ten Commandments in stone and gave them to Moses. The fourth commandment plainly states Exo 20:8-11 Remember the sabbath day, to keep it holy. Six days shalt thou labour, and do all thy work: 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: 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.
This means that in Moses...