Galatians 5:9
A little leaven makes a change in all the mass.
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Exodus 12:19
For seven days no leaven is to be seen in your houses: for whoever takes bread which is leavened will be cut off from the people of Israel, if he is from another country or if he is an Israelite by birth.
Galatians 5:12
My desire is that they who give you trouble might even be cut off themselves.
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Matthew 16:11
How is it that you do not see that I was not talking to you about bread, but about keeping away from the leaven of the Pharisees and Sadducees?
1 Corinthians 15:33
Do not be tricked by false words: evil company does damage to good behaviour.
2 Timothy 2:17
And their words will be like poisoned wounds in the flesh: such are Hymenaeus and Philetus;
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