I particularly like this photo taken in the Spring of 2008 in Cyprus.
It illustrates the Parable of the Mustard Seed (Mark 4.31) and the Allegory of the Vine (John 15).
The brilliant yellow of the mustard flower is every where in the spring -
on field edges, in gardens, on little bits of waste land
in Cyprus and Galilee.
The mustard seed does not grow into a great tree where the birds of the tree make their nests. Everyone knows that!
It is a pernicious weed that spreads everywhere!
Look in the photo at the yellow all around the edge of the vineyard where the vines are pruned and ready!
A different sort of power and a different sort of kingdom to those of Egypt or Assyria
(See Ezekiel 17.22 ff and 36.66ff)