'Congregation of the Lord' in the Bible

“This is what the entire congregation of the Lord says, ‘What is this disloyal and unfaithful act which you have committed against the God of Israel, so as to turn away from following the Lord this day, by building yourselves an altar, to rebel against the Lord this day?

Is the wrongdoing (idolatry) of Peor not enough for us, from which we have not cleansed ourselves to this day, even though the affliction [in which twenty-four thousand died] came on the congregation of the Lord,