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

Why is theft also mentioned?

Revelation 9:21 (ESV)

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

Fallen human nature is bent to take instead of to give. The Lord God, in contrast, emptied himself to serve the undeserving—be it by sending his only Son to earth, be it by Christ going to the cross. The gospel is all about give for the benefit of the other. Pagan religion does not know that concept. As a result, the lifestyle of those ensnared in paganism is characterized by take. That is the picture of theft.