The four being a number
goes across without a slumber
the sides are all four
the directions being four
east, west, north and south in all
could be a fair call
Hinduism talks of four vedas
rig, sama, yajur and atharvana vedas
four being a 
number even
divisible in even
two and two on either side
easy to go about in an abide
that being said of four
having the value in core.
Meenas Poems 