Matthew 16:4-6

Revised Standard Version

⁴ An evil and adulterous generation seeks for a sign, but no sign shall be given to it except the sign of Jonah.” So he left them and departed.

The Yeast of the Pharisees and Sadducees

⁵ When the disciples reached the other side, they had forgotten to bring any bread. ⁶ Jesus said to them, “Take heed and beware of the leaven of the Pharisees and Sad′ducees.”