Yeast

Jesus put before them another parable: “The kingdom of heaven is like a mustard seed that someone took and sowed in his field; it is the smallest of all the seeds, but when it has grown it is the greatest of shrubs and becomes a tree, so that the birds of the air come and make nests in its branches.”
He told them another parable: “The kingdom of heaven is like yeast that a woman took and mixed in with three measures of flour until all of it was leavened.” Jesus told the crowds all these things in parables; without a parable he told them nothing. This was to fulfill what had been spoken through the prophet:
“I will open my mouth to speak in parables;
I will proclaim what has been hidden from the foundation of the world.” Matthew 13:31-35 

Yeast

The dry grainy flour dry awaits the leaven
yearns to be molded and shaped
aching for loving hands to inspire it
seeking the yeast so all can rise.

A little moisture and some leaven
and there is life within which pushes
to grow and expand to the edges
awaiting the prospect of feeding many.

We can bear well the  harsh kneading
when we are fed and strengthed by love
without that yeast we scatter and blow away
we cannot stay together and grow.