Thus the heavens and the earth were finished, and all the host of them. 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. Genesis 2:1-3
"As a final and climactic act of His creation, God made the seventhday—separating it from the other days of His creation and making it holy. Sabbath is a palace in time.
God created/formed a very significant temporal space, but much more than that, He also filled the time with His holiness." DigitalCommons