“It is like a mustard seed which a man took and threw into his garden: it grew and became a tree, and the birds of the air sheltered in its branches.” Luke 13:19
The Kingdom of God always has a very humble beginning within us - the Lord compares it to the sowing of a mustard seed. If we faithfully and patiently allow the small seed, the good inspiration, the good thought to grow, very soon this seed of goodness will grow into a great tree, which symbolises the tree of virtue that appears within us, which is enough to provide shade and shelter to many around us.