A small portion of this dough was used to start or leaven each new lot of bread dough. In context, Jesus has just told the Parable of the Mustard Seed which essentially has the same meaning as this yeast … Parable of the Leaven/Yeast: Matthew 13:33; Luke 13:20-21. Apr 7, 2015 - Bible teaching material for parable of the yeast. 19 It is like a mustard seed, which a man took and planted in his garden. He tells his disciples to beware of the yeast … See more ideas about Bible teachings, Yeast, Parables. "18 Then Jesus asked, 'What is the kingdom of God like? It is believed that since early times, leavening mixtures for bread making were formed by natural contaminants in flour such as wild yeast … The parable of the leaven, also called the parable of the yeast, is another parable told by Jesus to illustrate what the kingdom of God is like. 21 It is like yeast … It grew and became a tree, and the birds of the air perched in its branches.' The Yeast of the Pharisees. What shall I compare it to? They had come to test Jesus and ask for a “sign.” He rebukes them and leaves. They were spreading their “yeast” of bad moral influence that contaminated the people’s minds. 20 Again he asked, 'What shall I compare the kingdom of God to? Leaven, mentioned in the Bible, was a soft, dough-type medium kept from one bread baking session to another. Jesus spoke of the yeast of the Sadducees as well in Matthew 16.