I AM REVIVAL AND LIFE !

God alone is immortal (1 Tim 6.17). Man is not immortal, but must seek immortality (Rom 1.7).
Death is the result of sin (Ezek 18.4, Rom 6.23). Conscious state in death (Ecclesiastes 9.5, 6.10; Ps 146.4).
The author of the doctrine of the immortality of man and the afterlife (as well as the "reincarnation") is Satan himself (Gen 3.4). From him went data Pagan beliefs.
Hope for believers is afterworld, not a resurrection and eternal life on the updated Earth (Rev 21.1, Matt 5.5). Christ resurrected Himself and gave all hope for resurrection. This is the 11st chapter of the Gospel of John:
-Death is sleep, which is not flowing time (v.11,13)
-If death is compared to sleep, resurrection - with the awakening, in which resurrected righteous will gain a new body (Job 19.25-26, Phil 3.21).
The Bible teaches that there will be two of the resurrection - the righteous and the wicked (Dan 12.2, John 5.28-29, Rev 20.4-5).
Over alive for eternity the second death has no power (Rev 20.6, 14).
The wicked will be resurrected for punishment and subsequently completely destroyed (Rev 20.9, Mal 4.1). Then the Earth will be created anew and the righteous will receive eternal happy life on it: "and I saw a new heaven and a new Earth, for the first heaven and the first Earth had passed away. I, John, saw the Holy City, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband. And I heard a loud voice from heaven saying, behold, the Tabernacle of God is with men, and he will dwell with them; they will be his people, and God himself will be with them their God. And God will wipe every tear from their eyes, and death shall be no more; nor crying, neither sickness nor sorrow, there will not be, for the former things have passed away"(Rev 21.1-4).