Judaism: The Temple Institute on the Parsha
The twelve massive stones Israel is commanded to to take from the Jordan River bed are from the very spot upon which the feet of the priests who held the Ark of the Covenant stood.
They must stand upright and the Jews must build with them an altar and write upon them the entire Torah.
These are not mere markers or billboards.
These stones' function is to make real Israel's eternal unbreakable bond to the land promised us by G-d.