Jesus warns his disciples against wrong teaching
In the boat, Jesus warned his disciples about wrong leaven (teaching).
Key passages
Mt 16:5–12

And when the disciples arrived at the other side, they had forgotten to take bread. And Jesus said to them, “Watch out for and beware of the leaven of the Pharisees and Sadducees!” So they were discussing this among themselves, saying, “It is …

Mk 8:13–21

And he left them, got into the boat again, and went to the other side. And they had forgotten to take bread, and except for one loaf, they did not have any with them in the boat. And he ordered them, saying, “Watch out! Beware of the leaven …

See also
Important Things