choirs of angels
tradition suggests that there are three hierarchies of angels, each
of which is divided into three choirs. The design for the ninth
chair shows the hierarchies arranged in their appropriate three
tiers. The circle at the top of the "9" contains a globe,
symbolising God. The globe contains a rainbow symbolising a throne.
a throne was set in heaven,
and one sat on the throne...
and there was rainbow around the throne."