Revelation 6:4

6:4 And another horse, fiery red, came out, and the one who rode it was granted permission to take peace from the earth, so that people would butcher one another, and he was given a huge sword.

Revelation 16:9

16:9 Thus people were scorched by the terrible heat, yet they blasphemed the name of God, who has ruling authority over these plagues, and they would not repent and give him glory.