Galatians 5:9
a little leaven the whole lump doth leaven;
1 Corinthians 15:33
Be not led astray; evil communications corrupt good manners;
Matthew 16:6-12
and Jesus said to them, 'Beware, and take heed of the leaven of the Pharisees and Sadducees;'
Matthew 23:33
'Serpents! brood of vipers! how may ye escape from the judgment of the gehenna?
Mark 8:15
and he was charging them, saying, 'Take heed, beware of the leaven of the Pharisees, and of the leaven of Herod,'
Luke 12:1
At which time the myriads of the multitude having been gathered together, so as to tread upon one another, he began to say unto his disciples, first, 'Take heed to yourselves of the leaven of the Pharisees, which is hypocrisy;
Luke 13:21
It is like leaven, which a woman, having taken, did hide in three measures of meal, till that all was leavened.'
1 Corinthians 5:6-7
Not good is your glorying; have ye not known that a little leaven the whole lump doth leaven?
2 Timothy 2:17
and their word as a gangrene will have pasture, of whom is Hymenaeus and Philetus,