"SABBATH, n. A weekly festival having its origin in the fact that God made the world in six days and was arrested on the seventh. Among the Jews observance of the day was enforced by a Commandment of which this is the Christian version: "Remember the seventh day to make thy neighbor keep it wholly." To the Creator it seemed fit and expedient that the Sabbath should be the last day of the week, but the Early Fathers of the Church held other views."
January 1, 1970
https://en.wikiquote.org/wiki/Sabbath