The death of the body is not the end of life. Death does not overtake life. God allows death to reveal to us the meaning and purpose of life. So if man does not die and does not cease to exist, what is the meaning of life and death in the Book of Scriptures. Life and death are the joy of the closeness to God or the hell of challenging and refusing God.
Death is an illusionary word.
There is death of the body, but we will regain a glorified body. Death is then nonexistent, and the eternal life starts here, from birth. Birth is the first among many steps towards eternal life, and the death of the body is only an event in life and not the end of life itself. Birth is the beginning of life and life is as defined by God the Father, to know that He is the true God and that He sent Jesus Christ. Whoever lives this life without a personal relationship with God is in death.