The Kingdom of God is like

The Kingdom apparently exists in ever changing resemblances. Jesus does not say what it is, only what it's like.

It's like a tiny seed. It's like a big tree. It's like something inside of you. Like a pearl you'd give everything to possess, like wheat growing in weeds, like a camel going through the eye of the needle. Like the way the world looks to children. Like making wise use of the master's money. Like getting a day's pay for an hour's work. Like a crooked magistrate fixing things in your favour. Like a narrow gate, a difficult road, a lamp on a stand. Like a wedding party. Like a wedding party where all the original guests have been dis-invited and replaced by random passers-by. Like yeast in dough. Like treasure, like a harvest, like a door that opens whenever you knock. Or like a door you have to bang on for hours in the middle of the night until a grumpy neighbour wakes up and gives you a loaf. 

The Kingdom is - whatever all these likenesses have in common. The Kingdom, it seems to be saying, is something that can only be grasped in comparisons, because the world contains no actual examples of it. And yet the world winks and shines the with possibility of it.

Unapologetic, Francis Spufford, Pp124-125