Moses endeavor to build up strength among the Israelites by selecting the pioneers of tens, the fifties, thousands. They filled in as educators and consultants, as judges, and as pioneers in the event of war. Before that, the general population were driven just by Moses and the Elders.
Answer: By setting an example (i think)
From : allnswers.com
African tribes started to attack each other for prisoners of war. This caused lots of tension between all the tribes.
