Matthew 13:31-35

He presented another parable to them, saying, “The kingdom of heaven is like a mustard seed, which a person took and sowed in his field;

and this is smaller than all the other seeds, but when it is fully grown, it is larger than the garden plants and becomes a tree, so that the birds of the sky come and nest in its branches.” The Leaven

He spoke another parable to them: “The kingdom of heaven is like leaven, which a woman took and hid in three sata of flour until it was all leavened.”

All these things Jesus spoke to the crowds in parables, and He did not speak anything to them without a parable.

This was so that what was spoken through the prophet would be fulfilled: “I will open My mouth in parables; I will proclaim things hidden since the foundation of the world.” The Weeds Explained