According to Paul[]
For the wages sin pays is death, but the gift God gives is everlasting life by Christ Jesus our Lord. (Romans 6:23)
And the last enemy, death, is to be brought to nothing. (1 Corinthians 15:26)
According to John[]
And the sea gave up the dead in it, and death and the Grave gave up the dead in them, and they were judged individually according to their deeds. And death and the Grave were hurled into the lake of fire. This means the second death, the lake of fire. (Revelation 20:13, 14)