Lots of things to understand here. Do I? I don't know.
Gen 2:17 Eat of the the tree of the knowledge of good and evil and you surely die.
From that point on physical death as well as spiritual for all until the accomplisments of Jesus Christ, but then "all?" taken up in the 1. gathering and 2. resurrected for the day of judgment, two events. I Thess 4:13-18 and John 5:28,29
Is it the accomplishment that Jesus Christ did, Romans 5 that allowed God who is LIFE (Old Testatment) to transfer LIFE, the authority of, to Jesus Christ (New Testament), John 5:26, thus allowing Jesus Christ to gather I Thess 4:13-18 and resurrect John 5: 28,29 all.
Is therefore the last enemy to be destroyed, death Rev 21:4 and what relationship does that have to do with the "second" death Rev 20:6,14 or after death one and two is there NO more death whether one or two.
If death is a bad thing and it separated us from God and it took the accomplishments of Jesus Christ to overcome. Then would it be death without the gathering and the resurrection that would re-unite people with God?
Oh Well, time to eat Sunday brunch. Comfort Food!!!!