King's duty

The king is the representative of the Supreme Lord, and 
therefore the king's interest must be identical with that of the 
Supreme Lord. The Supreme Lord wants all living beings to 
be obedient to Him and thereby become happy. Therefore 
the king's interest is to guide all subjects back to the 
kingdom of God. Hence the activities of the citizens should 
be so coordinated that they can at the end go back home,
back to Godhead. 

Under the administration of a representative king, the 
kingdom is full of opulence. At that time human beings need 
not eat animals. There is ample food, grains, milk, fruit and 
vegetables so that the human beings as well as the animals 
can eat sumptuously and to their heart's content. If all living 
beings are satisfied with food and shelter and obey the 
prescribed rules, there cannot be any disturbance between 
one living being and another. Emperor Parikshit was a 
worthy king, and therefore all were happy during his reign. - SB 1.4.12