"In the moment of eternity, while the taste of redemption was still fresh to the former slaves, the people of Israel were given the Ten Words, the Ten Commandments. In its beginning and end, the decalogue deals with the liberty of man. The first word--I am the Lord you God, who brought thee out of the land of Egypt, out of the house of bondage--reminds him that his...liberty was given him by God."
from "The Sabbath", by Abraham Joshua Heschel