《三国志·蜀书·刘彭廖李刘魏杨传》
我一定克尽职守，躬责自身，改过自新，向神灵起誓，如果不能继续向朝廷效命，那就无颜留在世上。 
虽必克己责躬，改过投死，以誓神灵；无所用命，则靡寄颜。 
I will do my duty, take responsibility for myself, correct my mistakes, and swear to the gods that if I can't continue to serve the court, I will have no face to stay in the world.
<s>[INST] Kindly elucidate the central themes in this passage in English: 虽必克己责躬，改过投死，以誓神灵；无所用命，则靡寄颜。  [/INST] I will do my duty, take responsibility for myself, correct my mistakes, and swear to the gods that if I can't continue to serve the court, I will have no face to stay in the world.</s>
Kindly elucidate the central themes in this passage in English: 虽必克己责躬，改过投死，以誓神灵；无所用命，则靡寄颜。
user
I will do my duty, take responsibility for myself, correct my mistakes, and swear to the gods that if I can't continue to serve the court, I will have no face to stay in the world.
assistant