Joshua instructed ¹  the leaders of the people:

After three days the leaders went through the camp

So Joshua summoned all Israel, including the elders, rulers, judges, and leaders, and told them: “I am very old.

Joshua assembled all the Israelite tribes at Shechem. He summoned Israel’s elders, rulers, judges, and leaders, and they appeared before God.

All the people, ¹  rulers, ²  leaders, and judges were standing on either side of the ark, in front of the Levitical priests who carried the ark of the covenant of the Lord. Both resident foreigners and native Israelites were there. ³  Half the people stood in front of Mount Gerizim and the other half in front of Mount Ebal, as Moses the Lord’s servant had previously instructed to them to do for the formal blessing ceremony. ⁴