But, O sire, there is one endowment which alone can cause all these attributes to come together; the fact is, when the king honoureth a particular person, the royal favour can cause all these attributes to shed their lustre (on the favourite). Those eight, O king, in the world of men, are indications of heaven. Of the eight (mentioned below) four are inseparably connected, with the good, and four others are always followed by the good.
In plain words: Vidura adds that one thing can make all these qualities shine at once: the favor of the king. When a king honors someone, people see all these good qualities in him. He says these eight are signs of heaven. He then begins another list, of four things the good always do and four they always follow.