Matthew 13:33

33He told them another parable. a“The kingdom of heaven is like leaven that a woman took and hid in bthree measures of flour, till it was call leavened.”

Matthew 16:6-12

6Jesus said to them, Watch and dbeware of ethe leaven of the Pharisees and Sadducees.” 7And they began discussing it among themselves, saying, “We brought no bread.” 8But fJesus, aware of this, said, g“O you of little faith, why are you discussing among yourselves the fact that you have no bread? 9 hDo you not yet perceive? Do you not remember ithe five loaves for the five thousand, and how many baskets you gathered? 10Or jthe seven loaves for the four thousand, and how many baskets you gathered? 11How is it that you fail to understand that I did not speak about bread? kBeware of the leaven of the Pharisees and Sadducees.” 12 lThen they understood that he did not tell them to beware of the leaven of bread, but of mthe teaching of the Pharisees and Sadducees.

Luke 13:21

21 nIt is like leaven that a woman took and hid in othree measures of flour, until it was pall leavened.”

1 Corinthians 15:33

33 qDo not be deceived: rBad company ruins good morals.”
Probably from Menander’s comedy Thais

Galatians 5:9

9 tA little leaven leavens the whole lump.

2 Timothy 2:17

17and their talk will spread like gangrene. Among them are uHymenaeus and Philetus,
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