Joshua 4:1-9
1-3. the Lord spake unto Joshua, Take you twelve men—each representing a tribe. They had been previously chosen for this service (Jos 3:12), and the repetition of the command is made here solely to introduce the account of its execution. Though Joshua had been divinely instructed to erect a commemorative pile, the representatives were not apprised of the work they were to do till the time of the passage.
4, 5. Joshua called the twelve men—They had probably, from a feeling of reverence, kept back, and were standing on the eastern bank. They were now ordered to advance. Picking up each a stone, probably as large as he could carry, from around the spot "where the priests stood," they pass over before the ark and deposit the stones in the place of next encampment (Jos 4:19, 20), namely, Gilgal.
6, 7. That this may be a sign among you—The erection of cairns, or huge piles of stones, as monuments of remarkable incidents has been common among all people, especially in the early and rude periods of their history. They are the established means of perpetuating the memory of important transactions, especially among the nomadic people of the East. Although there be no inscription engraved on them, the history and object of such simple monuments are traditionally preserved from age to age. Similar was the purpose contemplated by the conveyance of the twelve stones to Gilgal: it was that they might be a standing record to posterity of the miraculous passage of the Jordan.
8. the children of Israel did so as Joshua commanded—that is, it was done by their twelve representatives.
Jos 4:9. TWELVE STONES SET UP IN THE MIDST OF JORDAN.
9. Joshua set up twelve stones . . . in the place where the feet of the priests . . . stood—In addition to the memorial just described, there was another memento of the miraculous event, a duplicate of the former, set up in the river itself, on the very spot where the ark had rested. This heap of stones might have been a large and compactly built one and visible in the ordinary state of the river. As nothing is said where these stones were obtained, some have imagined that they might have been gathered in the adjoining fields and deposited by the people as they passed the appointed spot.
they are there unto this day—at least twenty years after the event, if we reckon by the date of this history (Jos 24:26), and much later, if the words in the latter clause were inserted by Samuel or Ezra.Jos 4:10-13. THE PEOPLE PASS OVER.