and HaReve'it of HaChayyot was like a flying nesher  eagle .  And the Arba Chayyot, each one of them had six wings, and these wings, around and within were full of eynayim.  And yomam valailah, they do not cease to rest but continue singing, "Kadosh, kadosh, kadosh, Hashem Adonoi Tzvaot, the One who was and is and is to come." [Yeshayah 6:2; Yechezkel 1:18;  Yeshayah 6:3]