'Elders' in the Bible

So all the elders of Israel came to the king to Hebron; and David made a covenant with them in Hebron before Yahweh; and they anointed David king over Israel, according to the word of Yahweh by Samuel.

So David, and the elders of Israel, and the captains over thousands, went to bring up the ark of the covenant of Yahweh out of the house of Obed-Edom with joy.

David lifted up his eyes, and saw the angel of Yahweh standing between earth and the sky, having a drawn sword in his hand stretched out over Jerusalem. Then David and the elders, clothed in sackcloth, fell on their faces.