'Congregation of the Lord' in the Bible

Why have you brought up the assembly of the Lord into this wilderness to die here, we and our livestock?

who will go out and come in before them, and will lead them out and bring them in, so that the congregation of the Lord will not be as sheep without a shepherd.”

Look, these [are the women who] caused the Israelites, by the counsel of Balaam, to trespass against the Lord in the matter of Peor, and so a plague came among the congregation of the Lord.