In spite of persecution and warning (cf. 4:17-210 the apostles continue to witness. Consider the different parts played by the angel (verse 19), the Holy Spirit (verses 20, 32), and Gamaliel (verses 34-40) in making this possible.
Do you know something of the same constraint – to speak to others about Christ?
Consider the four different reactions of the religious opposition (verses 17, 24, 26, 33).
Finally they beat the apostles. Cf. 1 Pet. 2:20, 21. Are you afraid to suffer through faithful witness?