Matthew 13:31-35 NRSVue
31He put before them another parable: “The kingdom of heaven is like a mustard seed that someone took and sowed in his field; 32it 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.”
33He 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.”
34Jesus told the crowds all these things in parables; without a parable he told them nothing. 35This 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 since the foundation.”,
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Some thoughts on this scripture
These are the most comforting of parables, because they show the kingdom of heaven as organic, with its own life-force: growing by trickling increment beyond all our expectations, inviting all sorts of birds onto its branches; and growing secretly like yeast in a loaf.