'Assembly' in the Bible

I did not sit with the group of those who celebrate,Nor did I rejoice;I sat alone because Your [powerful] hand was upon me,For You had filled me with indignation [at their sin].

Then some of the elders of the land stood up and spoke to all the assembly of the people, saying,

Then all the men who knew that their wives were burning sacrifices to other gods, and all the women who were standing by, a large group, including all the people who were living in Pathros in the land of Egypt, answered Jeremiah, saying,

“For behold, I will stir up and bring up against BabylonAn assembly of great nations from the north country.They will equip themselves and set up the battle lines against her;From there she will be taken captive.Their arrows will be like an expert warriorWho will not return empty-handed.