1. Acts 12:4 (ESV)
  2. Exposition

What was the purpose of a public trial?

Acts 12:4 (ESV)

4 And when he had seized him, he put him in prison, delivering him over to four squads of soldiers to guard him, intending after the Passover to bring him out to the people.

The trial would serve to present the guilt of Peter to the public so that he can be legitimately executed.1