What does Joshua 8:33 mean?

All Israel—elders, leaders, judges, and everyone else, including foreigners living among them—stood on both sides of the ark, facing the priests who carried the covenant chest. Half stood in front of Mount Gerizim, half in front of Mount Ebal, just as Moses had told them, to bless the people. Joshua 8:33 - Modern Text Bible

(The whole community, including outsiders, gathers for a ceremony to hear God's law and receive a blessing.)