19 The teachers of the law and the chief priests looked for a way to arrest him immediately, because they knew he had spoken this parable against them. But they were afraid of the people.

Read Luke 20:19 Using Other Translations

And the chief priests and the scribes the same hour sought to lay hands on him; and they feared the people: for they perceived that he had spoken this parable against them.
The scribes and the chief priests sought to lay hands on him at that very hour, for they perceived that he had told this parable against them, but they feared the people.
The teachers of religious law and the leading priests wanted to arrest Jesus immediately because they realized he was telling the story against them—they were the wicked farmers. But they were afraid of the people’s reaction.