What does the Bible say about death and sin?

The Scriptures declare that death entered the world through sin. In Romans 5:12, we learn, 'Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned.' This passage establishes a profound theological truth: Adam's disobedience in the Garden resulted not just in his death but in the death of all humanity. Thus, physical death, spiritual death, and eternal death are the direct results of mankind's sinfulness. The consequence of sin affects all of Adam's descendants, demonstrating our collective fallen state.