This is why Christian theology is true. Its basis is in real historical events that actually happened. One crucial catastrophic historic event, the Fall of Adam, will give an example of the complete intertwining of the historical events of the Bible with Christian theology. The world that God made was perfect, and everything was once very good. Then Adam rebelled against God, and as a result of that rebellion, things changed.
Sin is another name for rebellion, and death is a consequence of sin.
If death is not a consequence of sin, Jesus Christ died in vain, and the gospel of Jesus Christ is meaningless. Paul explains the connection in detail in the book of Romans. Even some Reformed leaders have been caught in that trap. Another catastrophic historic event was the global Flood of Noah. The Christian doctrine of judgment is rooted in this historic event.