Meanwhile as the people had gathered in tens of thousands, so that they were trampling upon one another, He began to say, first of all, to His disciples: "Beware of the yeast of the Pharisees, that is, hypocrisy.

While all the people were listening, He said to His disciples,

And understand

Then Philip ran up and listened to him reading the prophet Isaiah, and he asked, "Do you understand what you are reading?"

General references

Let him who has ears listen."

Then Jesus said to the crowds and to His disciples:

And He said, "Let him who has ears listen!"