450. Why did God "bless the Sabbath day and declare it sacred" (Exodus 20:11)?God did so because on the Sabbath day one remembers
God's rest on the seventh day of creation, and also the liberation of Israel from slavery in Egypt and the Covenant which God sealed with his people.
Further reading: CCC 2168-2172, 2189451. How did Jesus act in regard to the Sabbath?
Jesus recognized the holiness of the Sabbath day and with divine authority he gave this law its authentic interpretation: "The Sabbath was made for man, and not man for the sabbath" (
Mark 2:27).
Further reading: CCC 2173