Mark 8:13-16

13Then he left them, got back into the boat and crossed to the other side.

The Yeast of the Pharisees and Herod 14The disciples had forgotten to bring bread, except for one loaf they had with them in the boat.

15“Be careful,” Jesus warned them. “Watch out for the yeast of the Pharisees and that of Herod.”

16They discussed this with one another and said, “It is because we have no bread.”