John Gill Commentary Joshua 8:33

"And all Israel, and their elders and officers, and their judges, stood on this side of the ark and on that side before the priests the Levites, that bare the ark of the covenant of Jehovah, as well the sojourner as the homeborn; half of them in front of mount Gerizim, and half of them in front of mount Ebal; as Moses the servant of Jehovah had commanded at the first, that they should bless the people of Israel." — Joshua 8:33 (ASV)

And all Israel, and their elders, and officers, and their
judges, stood on this side the ark, and on that side
Some on Ebal, and some on Gerizim:

before the priests and the Levites, which bare the ark of the covenant
of the Lord ;
it being brought out of the tabernacle on this occasion, and bottle by the priests and Levites:

as well the stranger, as he that was born among them ;
that is, as well the proselytes as the native Israelites, both appeared and were in the same situation:

half of them over against Mount Gerizim ;
that is, half of the tribes, and these were Simeon, Levi, Judah, Issachar, Joseph, and Benjamin:

and half of them over against Mount Ebal ;
which were the tribes of Reuben, Gad, Asher, Zebulun, Dan, and Naphtali; (See Gill on Deuteronomy 27:12) and (See Gill on Deuteronomy 27:13);

as Moses the servant of the Lord had commanded before, that they
should bless the people of Israel ,
as in (Deuteronomy 27:12) .