The answer is: Accidental murder

Josh 20:3

In the ancient context of the Israelites, life was often governed by strict codes of law, which directed their daily lives and interactions. Enter the cities of refuge, established as safe havens for those who committed accidental murder, like tripping someone in an awkward moment resulting in fatality. Josh 20:3 tells us that these cities were designed so that the unintentional killer could escape the avenger's wrath—a family member seeking justice to restore societal balance by avenging a loved one's death.

These cities didn't apply to every kind of killing—it had to be unintentional, which adds a rich layer to how justice was envisioned in their society. Three cities were designated on either side of the Jordan River to ensure everyone had accessible refuge. It's intriguing to note that their locations point to a broader principle of balance and forgiveness.

Excavation sites to this day even provide insight into these ancient societies, shedding light on practices comparable to modern concepts of manslaughter. Think of it as a precursor to established legal systems we find now. Isn't it fascinating how this safeguards life? It showcases a dynamic element of mercy, emphasizing that not every life-altering mistake should result in a "life for a life." This echoes the call for understanding in conflict resolution emphasizing remorse and possibility for rehabilitation—important lessons for us today.