《六韬·龙韬·立将》
 将军接受命令后，国君就令太史占卜，斋戒三天，前往太庙，钻炙龟甲，通过占卜选择吉日，向将帅颁授斧钺。
 将既受命，乃命太史卜，斋三日，至太庙，钻灵龟，卜吉日，以授斧钺。
After the general received the order, the monarch would order the imperial historian to make a divination, fast for three days, go to the ancestral temple, drill and burn the tortoise shell, and choose the auspicious day through divination to grant the general axe and battle-axe.
<s>[INST] Kindly elucidate the central themes in this passage in English:  将既受命，乃命太史卜，斋三日，至太庙，钻灵龟，卜吉日，以授斧钺。 [/INST] After the general received the order, the monarch would order the imperial historian to make a divination, fast for three days, go to the ancestral temple, drill and burn the tortoise shell, and choose the auspicious day through divination to grant the general axe and battle-axe.</s>
Kindly elucidate the central themes in this passage in English:  将既受命，乃命太史卜，斋三日，至太庙，钻灵龟，卜吉日，以授斧钺。
user
After the general received the order, the monarch would order the imperial historian to make a divination, fast for three days, go to the ancestral temple, drill and burn the tortoise shell, and choose the auspicious day through divination to grant the general axe and battle-axe.
assistant