The CELESTIAL ORDER of the UNIVERSE - (Part 1) - The Hierarchy of HEAVEN and The Divine Order
"The appearance of the wheels and their work was like unto the colour of a beryl: and they four had one likeness: and their appearance and their work was as it were a wheel in the middle of a wheel." (Ezekiel 1:16 KJV)
"For all this we give thanks, for all things known and unknown, all benefits manifest and hidden... and also this Liturgy, which God deigns to accept from our hands, though before Him stand thousands of archangels and myriads of angels, cherubim and seraphim (icon), six-winged, many-eyed soaring aloft on the wings, singing, crying out and shouting the triumphal hymn..." (great explanation of the Liturgic ritual - http://www.saintelias.com/ca/liturgy/anaphora.php)