Some didn't have much of a choice in the matter because most Jewish people during terror attacks or war breakouts were poor and others beveled or believe that god would or will not let there city fall to ruins i choose not to go too deep into religious thing like that
Because they believed that God wouldn’t let anything happen to them(at least most of them) So their faith was so strong that they weren’t afraid of what was happening
They must be a person qualified to be appointed as a Judge of the Supreme Court. Hence, they must have been a judge of some high court for five years or an advocate of some high court for ten years.