It is a memorial of creation. Every time we rest upon the seventh day, as God did at creation, we commemorate that grand event. It was given to Adam, the head of the human race. It is not a Jewish institution, for it was made 2,300 years before ever there was a Jew. Men should be cautious how they stigmatize God's holy rest day.
Evident reference is made to the Sabbath and the seven-day week all through the patriarchal age.
It was a part of God's law before Sinai. Then God placed it in the heart of His moral law. The seventh-day Sabbath was commanded by the voice of the living God. Then He wrote the commandment with His own finger. He engraved it in the enduring stone, indicating its imperishable nature.