It's actually fairly explicit in the Torah, specifically in Numbers chapter 35. The Mosaic code there established cities of refuge to which killers were to be allowed to travel and be judged, where they would be free of revenge from those wronged until the priests decided whether their offense was murder, manslaughter, negligence, or accident, and imposed the appropriate penalty.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
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