Answer: A jury.
Explanation: The Greeks, Romans, and Judeo-Christians had a variety of court procedures through out their thousand year old history.
However they all established a jury for judging which was thought to be less corruptible to bribes since it's a larger group and have more balanced opinions on review since it's a mix of different opinions.
This contributed to the idea of a jury deciding criminal trials in U.S law because it's more fair.