Someone can take over the country without Jin, but No one can become the ruler of the kingdom without Jin.
This is a word of Mencius.
So, Samurai must have Jin to rule people.
This is Samurai’s duty to have Jin, otherwise, society can not be reserved many years cause if people don’t feel their favor, another ruler should stand.
Samurai imposed themselves on having Jin as ruler.
This is so true in anywhere. If you become a manager, we try to have Jin. Otherwise we never win the hearts and minds of the people.