Theophylact of Ohrid
Catena Aurea · Lukasevangelium 13
Then said he, Unto what is the kingdom of God like? and whereunto shall I resemble it? It is like a grain of mustard seed, which a man took, and cast into his garden; and it grew, and waxed a great tree; and the fowls of the air lodged in the branches of it. And again he said, Whereunto shall I liken the kingdom of God? It is like leaven, which a woman took and hid in three measures of meal, till the whole was leavened. He next likens the kingdom of God to leaven, for it follows, And again he says, Whereunto shall I liken it? It is like to leaven, &c.
Or, for the woman you must understand the soul; but the three measures, its three parts, the reasoning part, the affections, and the desires. If then any one has hidden in these three the word of God, he will make the whole spiritual, so as not by his reason to lie in argument, nor by his anger or desire to be transported beyond control, but to be conformed to the word of God.