What is the true biblical definition of resurrection?

Les explains that Lazarus had to die, showing resurrection is not just being brought back to life. He defines it as that unique, sovereign act of God whereby He will bring back from the dead a human being who has died, not just to die again, but back to a life of eternity. He connects this to Genesis, where God breathed into man's nostrils the breath of life and man became a living soul, distinguishing man from other life because the soul or spirit is immortal, even though the body is not. Revelation speaks of the resurrection of the just to a life of immortality in God's presence. The lost are resurrected to a life separated from God, or the second death, yet they continue through all eternity. Les notes some groups teach the lost are annihilated, but that does not line up with Scripture; the lost will suffer and experience regret and feeling throughout all the eons of eternity. Christ was the first person to experience resurrection, called the first fruits, plural, of them that slept.