Luke 13:11
Then Jesus asked, What is the kingdom of God like? What shall I compare it to? It is like a mustard seed, which a man took and planted in his garden. It grew and became a tree, and the birds perched in its branches — the mustard seed's transformation from the smallest of seeds to a bird-sheltering tree communicates the kingdom's disproportionate expansion from a tiny Galilean beginning. Daniel 4:12 and Ezekiel 17:23 both use the bird-sheltering tree as an image of a world-encompassing kingdom.