Shemot 18:21-22

Moreover thou shalt provide out of kol HaAm anshei chayil (able men), yirei Elohim, anshei emes, hating bribes; and place such over them, to be over thousands, and over hundreds, over fifties, and over tens; And let them judge HaAm at all times; and it shall be, that every davar hagadol they shall bring unto thee, but every davar hakaton they shall judge; so shall it be eased for thyself, and they shall bear the burden with thee.