On the elders of Israel, see note upon Exodus 3:16. It is clear that the Israelitish nation, though in bondage to the Egyptians, had a certain internal organisation of its own, and possessed a set of native officers.
These were probably the hereditary heads of families. Moses and Aaron could have no authority to gather these persons together; but they issued an invitation, and it was accepted. The "elders" came to the meeting.