The Second Death is the Death of Death

“The sea gave up the dead that were in it, and Death and Hades gave up the dead that were in them, and each one was judged according to his deeds. Then Death and Hades were thrown into the lake of fire. This is the second death – the lake of fire.” (Revelation 20:13-14)

“Then comes the end, when he hands over the kingdom to God the Father, when he has brought to an end all rule and all authority and power. For he must reign until he has put all his enemies under his feet. The last enemy to be eliminated is death. For he has put everything in subjection under his feet. But when it says “everything” has been put in subjection, it is clear that this does not include the one who put everything in subjection to him. And when all things are subjected to him, then the Son himself will be subjected to the one who subjected everything to him, so that God may be all in all.” (1 Corinthians 15:24-28)