2960. kuriakos -- of the Lord ... 2960 () is used of Supper (ie "communion," the table) and " day" () as the appointed day for rest and worship. See 1 Cor 11:20; Rev 1:10. ... /greek/2960.htm - 7k
Condensed Biblical Cyclopedia
Day of Rest
On the seventh day, God having completed His creative work, rested, And blessed and sanctified the day (Genesis 2:2,3). There is no evidence that man was required at this time to keep the day.