The following are online citations from Moshe Chafetz's 1710 work Melekhet Machashevet, found on the internet.
Not all links are still active, but relevant text is excerpted here in full.
"You shall also seek out from among all the people capable men who fear God, trustworthy men who spurn ill-gotten gain. Set these over them as chiefs of thousands, hundreds, fifties, and tens, and let them judge the people at all times." (Exodus 18:21)
"'Men 'who fear God, trustworthy men.' That is, whose fear of God is genuine, and not affected." (Rabbi Moshe Chefetz)
For more information: The Chafetz Project
Any and all information about Melekhet Machashevet or Moshe Chafetz is greatly appreciated.
Contact me at djbrook@sbcglobal.net.