Galatians 5:9
A little leaven leaveneth the whole mass.
1 Corinthians 15:33
Be not deceived: evil conversations corrupt good manners.
Matthew 16:6-12
Then Jesus said to them, Beware and abstain from the leaven of the Pharisees and of the Sadducees.
Matthew 23:33
Ye serpents, ye broods of vipers! how can ye escape from the damnation of hell?
Mark 8:15
And he earnestly charged them, saying, Beware, take heed of the leaven of the Pharisees, and of the leaven of Herod.
Luke 12:1
MEANTIME myriads of people collecting, so that they trod on one another, he began to speak to his disciples, Take heed principally of the leaven of the Pharisees, which is hypocrisy.
Luke 13:21
It is like leaven, which a woman taking, covered up in three measures of meal, till the whole was leavened.
1 Corinthians 5:6-7
Your glorying is not good: know ye not that a little leaven leaveneth the whole mass?
2 Timothy 2:17
And their discourse will eat like as a gangrene; of whom are Hymeneus and Philetus;