It is for every man to die, active case with emphasis on having life, then being subjected to a state of existence involving separation.
Anthropology of man includes a body, a soul, and a spirit as originally created in Adam and the second Adam.
For the unbeliever, already dead in the spirit to the Living God, he is already in a state of separation, a state of death. He inherited that old sin nature, the natural man, from bodily birth (perhaps in the DNA). The unbeliever still has a body and a soul (mind and heart), but dead in the spirit (no regenerated spirit).
For the unbeliever, the first death is then the separation of his soul from his body. Body goes to the grave and his soul to Hades, namely to the Torments.
For the believer, having body and soul and a regenerated spirit, when he suffers the first death, his soul and spirit are separated from the body, and are face to face with the Lord, hence may be in heaven.
The second death occurs after the Great White Throne Judgment after to book of names and works have been opened. Those found to be lacking in divine righteousness are then judged as good for nothingness and placed in that place created for things that are good for nothingness, i.e. the Lake of Fire.
Would you say that spiritual birth must come before spiritual death? Is Adam a special case?