Galatians 5:9
A little leaven leavens the whole lump.
1 Corinthians 15:33
Be not deceived: evil companions corrupt good character.
Matthew 16:6-12
Then Jesus said unto them, Take heed and keep yourselves from the leaven of the Pharisees and of the Sadducees.
Matthew 23:33
Ye serpents, ye generation of vipers, how can ye escape the judgment of hell?
Mark 8:15
And he commanded them, saying, Take heed, beware of the leaven of the Pharisees and of the leaven of Herod.
Luke 12:1
In the meantime, when there were gathered together an innumerable multitude of people, insomuch that they trode one upon another, he began to say unto his disciples first of all, Beware ye of the leaven of the Pharisees, which is hypocrisy.
Luke 13:21
It is like leaven which a woman took and hid in three measures of meal until the whole was leavened.
1 Corinthians 5:6-7
Your glorying is not good. Know ye not that a little leaven leavens the whole lump?
2 Timothy 2:17
And that word will eat away as gangrene, of whom are Hymenaeus and Philetus,