The disciples are before the Sanhedrin, accused of insurrection by preaching in the the name of Jesus. The Sanhedrin release them, guessing the movement will self-destruct. The disciples rejoice in their punishment and promptly continue their preaching "uninterrupted".
There was an unstoppable force released within the early church, the power of the Holy Spirit. What stops my preaching the of the Good News about Jesus? Absence of the Holy Spirit.