1. Revelation 9:21 (ESV)
  2. Exposition

What is significant about sorcery being mentioned here?

Revelation 9:21 (ESV)

21 nor did they repent of their murders or their sorceries or their sexual immorality or their thefts.

Pagan religion uses sorcery as a means to exert control over another person, to damage him, and perhaps even to kill him.