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
In the meantime, the vast multitude having been gathered together, so as to tread one upon another, He began to say to His disciples, first, "Beware of the leaven of the Pharisees, which is hypocrisy.
Galatians 5:9
A little leaven leavens the whole lump.
Matthew 16:6
And Jesus said to them, "Take heed, and beware of the leaven of the Pharisees and Sadducees."
Matthew 16:11-12
How is it that ye do not perceive that I spake not to you concerning bread? but beware of the leaven of the Pharisees and Sadducees?
Luke 21:34
"But take heed to yourselves, lest at any time your hearts be weighed down with gluttony and drunkenness, and anxieties pertaining to life, and that day come upon you suddenly as a snare;
Acts 14:22
confirming the souls of the disciples, exhorting them to abide in the faith, and that through many tribulations we must enter into the Kingdom of God.
1 Corinthians 5:6-8
Your boasting is not good. Know ye not that a little leaven leavens the whole lump?
1 Peter 4:2
that ye no longer live the rest of your time in the flesh to the desires of men, but to the will of God.