'Elders' in the Bible

Listen to this, you elders; pay attention, all inhabitants of the land. Has anything like this ever happened in your whole life or in the lifetime of your ancestors?

Announce a holy fast; proclaim a sacred assembly. Gather the elders and all the inhabitants of the land to the temple of the Lord your God, and cry out to the Lord.

Gather the people; sanctify an assembly! Gather the elders; gather the children and the nursing infants. Let the bridegroom come out from his bedroom and the bride from her private quarters.