'Ruler's' in the Bible

He chose the best part for himself,because a ruler’s portion was assigned there for him.He came with the leaders of the people;he carried out the Lord’s justiceand His ordinances for Israel.

A large population is a king’s splendor,but a shortage of people is a ruler’s devastation.

Many seek a ruler’s favor,but a man receives justice from the Lord.

If the ruler’s anger rises against you, don’t leave your place,for calmness puts great offenses to rest.