Matthew 16:6
6 Jesus said to them, “Watch and obeware of pthe leaven of the Pharisees and Sadducees.”
Matthew 16:11–12
11 How is it that you fail to understand that I did not speak about bread? oBeware of the leaven of the Pharisees and Sadducees.” 12 vThen they understood that he did not tell them to beware of the leaven of bread, but of wthe teaching of the Pharisees and Sadducees.
Mark 8:15
15 And he cautioned them, saying, “Watch out; abeware of bthe leaven of the Pharisees and the leaven of cHerod.”1