Mark 8:15
So he gave them this warning. "Look out! Be on the watch against the leaven of the Pharisees, and the leaven of Herod."
Luke 12:1
Meanwhile when myriads of the multitudes were thronging around him so that they trod one upon another, he began to say to his disciples, first of all. "Beware of the leaven of the Pharisee, which is hypocrisy.
Galatians 5:9
A little leaven is leavening the whole lump.
Matthew 16:6
Presently Jesus said to them, "Take heed and beware of the leaven of the Pharisees."
Matthew 16:11-12
"How is it that you do not perceive that I did not speak to you concerning bread? But beware off the leaven of the Pharisees and Sadducees!"
Luke 21:34
"But take heed to yourselves lest your hearts be surcharged with self-indulgence and drunkenness and worldly cares, and that day catches you suddenly like a trap.
Acts 14:22
Everywhere they strengthened the souls of the disciples, encouraging them to hold to the faith. "It is through many tribulations," they said, "that we must enter into the kingdom of God."
1 Corinthians 5:6-8
Your glorying is not good. Do you not know that even a little leaven leavens all the lump?
1 Peter 4:2
so that in future you may not spend your life in the flesh according to men's desires, but in the will of God.