Matthew 13:31-36 (6th Wednesday after Pentecost)
The Lord said this parable, "The kingdom of heaven is like a grain of mustard seed which a man took and sowed in his field; it is the smallest of all 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 leaven which a woman took and hid in three measures of flour, till it was all leavened." All this Jesus said to the crowds in parables; indeed he said nothing to them without a parable. This was to fulfil what was spoken by the prophet: "I will open my mouth in parables, I will utter what has been hidden since the foundation of the world." Then he left the crowds and went into the house. And his disciples came to him, saying, "Explain to us the parable of the weeds of the field."