Coffman Commentaries on the Bible - Joshua 4:8-14
"And the children of Israel did so, as Joshua commanded, and took up twelve stones out of the midst of the Jordan, as Jehovah spake unto Joshua, according to the number of the tribes of the children of Israel; and they carried them over with them unto the place where they lodged, and laid them down there. And Joshua set up twelve stones in the midst of Jordan, in the place where the feet of the priests that bare the ark of the covenant stood: and they are there unto this day. For the priests... read more
E.W. Bullinger's Companion Bible Notes - Joshua 4:9
twelve . Septuagint has "other twelve". There were two twelves. read more