Found close to four hundred times in the New Testament, the Greek noun “hemera” meant “day.” Matthew (2:1) described the “days” of Herod the king and the “days” of John the Baptist (Mt. 3:1).  There will be “day of judgment” (Mt. 11:22).  Jesus was “three days” in the grave (Mt. 12:40).  There is the “Lord’s Day” (Sunday), Rev. 1:10.  Some observe certain “days” when they should not (Gal. 4:10).