The purpose of doors

vertical slice of light widens
as cathedral doors open
becomes T-shaped as they swing
embrace worshippers eager for shade
enlightenment, a new perspective

doors within doors
grant entry to sun
unfiltered by stained glass
the deference of downcast eyes
seeks side chapels’ silence

bands of iron, hand-forged into scrolls,
take the timber’s weight
human hands admit believers
the arch’s crown holds the keystone
on which everything else depends