Revelation 20:14–15 (ESV)

14 Then Death and Hades were thrown into the lake of fire. This is the second death, the lake of fire.

Since Satan and his assistants have been turfed from Earth and thrown into the lake of fire (Revelation 19:20; Revelation 20:10), the question arises as to what is to happen with those to whom God had initially entrusted his creation (Genesis 1:26–27; Genesis 2:15) but who had decided to follow Satan’s deception (Genesis 3:6–7). The question is important since humanity is ultimately responsible for the presence of sin in God’s world and the damage consequently done to his creation (Romans 8:20–22). The present passage relates that people’s deeds—sin-filled as we all are—earn for us the identical sentence that God imposed on the devil, the beast, and the false prophet.