《旧唐书·列传·卷四十》
长安年中，他曾对我说： 相王一定会承运受命，我们应当尽节侍奉。 
长安年中，尝谓臣云： 相王必膺期受命，当须尽节事之。 
During the Chang'an years, he once said to me: King Xiang will definitely accept the fate. We should serve wholeheartedly.
<s>[INST] Kindly elucidate the central themes in this passage in English: 长安年中，尝谓臣云： 相王必膺期受命，当须尽节事之。  [/INST] During the Chang'an years, he once said to me: King Xiang will definitely accept the fate. We should serve wholeheartedly.</s>
Kindly elucidate the central themes in this passage in English: 长安年中，尝谓臣云： 相王必膺期受命，当须尽节事之。
user
During the Chang'an years, he once said to me: King Xiang will definitely accept the fate. We should serve wholeheartedly.
assistant