Select fear God and trustworthy men as officials

Exodus 18:13-27
Moses listened to his father-in-law and did everything he said. Teach them the decrees and laws, and show hem the way to live and the duties the are to perform. Select capable men from all the people - men who fear God, trustworthy men who hate dishonest gain - and appoint them as officials over thousands, hundreds fifties an tens.
The burden of leadership is heavy, and Jethro's practical suggestion for reorganization and delegation(委託) is a sound one(一個合理的). Jethro, although a non-Israelite, is reckoned(推想，估計) a godly man. He is welcomed and his advice taken.
Why?
How to share the duties to others and make all people will go home satisfied. 1)Teach them the decrees and laws  2)Select capable men who fear God and trustworthy; hate dishonest gain; be an officials over different groups.
How?
Select capable men from people to be an officials is needed reorganization and delegation system. The requirement are fear God and trustworthy.