4 And Joshua calleth unto the twelve men whom he prepared out of the sons of Israel, one man—one man out of a tribe; 5 and Joshua saith to them, 'Pass over before the ark of Jehovah your God unto the midst of the Jordan and lift up for you each, one stone on his shoulder, according to the number of the tribes of the sons of Israel, 6 so that this is a sign in your midst, when your children ask hereafter, saying, What 'are' these stones to you? 7 that ye have said to them, Because the waters of the Jordan were cut off, at the presence of the ark of the covenant of Jehovah; in its passing over into the Jordan were the waters of the Jordan cut off; and these stones have been for a memorial to the sons of Israel—to the age.' 8 And the sons of Israel do so as Joshua commanded, and take up twelve stones out of the midst of the Jordan, as Jehovah hath spoken unto Joshua, according to the number of the tribes of the sons of Israel, and remove them over with them unto the lodging-place, and place them there, 9 even the twelve stones hath Joshua raised up out of the midst of the Jordan, the place of the standing of the feet of the priests bearing the ark of the covenant, and they are there unto this day.
Matthew Henry's Commentary on Joshua 4:4-9
Commentary on Joshua 4:1-9
(Read Joshua 4:1-9)
The works of the Lord are so worthy of rememberance, and the heart of man is so prone to forget them, that various methods are needful to refresh our memories, for the glory of God, our advantage, and that of our children. God gave orders for preparing this memorial.