The story continues when the healers are arrested and repremanded for their questionable behavior. The chains here represent the fact that John and Peter are handcuffed by the religious people, but at the same time they are bound to their call to spread the Truth.
Dan taught on Pentecost, these were my notes. One thing that stood out to me for the first time was the fact that everyone in the city heard the good news in their own language when the spirit came. No one should be left out.