The people of God kept the Bible Sabbath before the Ten Commandments were given at Mount Sinai.
The Sabbath Truth was first given to our race in Eden before the fall of man. It was given before sin existed. It was given to every man to link him to his God. And if Adam needed the Sabbath, we need it all the more today.
God’s people had it before Mount Sinai. Four chapters before the Ten Commandments were given on Mount Sinai, the God of heaven spoke in such a way that it is obvious that the seventh-day Sabbath was already well-known by the people of God—but not always well-kept. Read Exodus 16.
There are those who say that the seventh-day Sabbath was not commanded by God, nor kept by man before it was spoken from Mount Sinai in Exodus 20. But Genesis 2:1-3 and Exodus 16 prove otherwise.