Exodus 18:27

If thou shalt do this thing, and God command thee so, then thou shalt be able to endure, and all this people shall also go to their place in peace.

So Moses hearkened to the voice of his father in law, and did all that he had said.

And Moses chose able men out of all Israel, and made them heads over the people, rulers of thousands, rulers of hundreds, rulers of fifties, and rulers of tens.

And they judged the people at all seasons: the hard causes they brought unto Moses, but every small matter they judged themselves.