is used (a) of a month, Luke 1:26,36; (b) an hour, Matthew 20:5; 27:45 and parallel passages; John 4:6; (c) an angel, Revelation 9:13,14; 16:12; (d) a seal of a roll, in vision, Revelation 6:12; (e) of the "sixth" precious stone, the sardius, in the foundations of the wall of the heavenly Jerusalem, Revelation 21:20 .