Bible Verses About Pillars: Sometimes of a heap of stones

The children of Israel did as Joshua commanded, and took up twelve stones out of the middle of the Jordan, as the LORD spoke to Joshua, according to the number of the tribes of the children of Israel; and they carried them over with them to the place where they lodged, and laid them down there.

Joshua set up twelve stones in the middle of the Jordan, in the place where the feet of the priests who bore the ark of the covenant stood; and they are there to this day.

Joshua set up those twelve stones, which they took out of the Jordan, in Gilgal.