Joshua 4:9

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.

10 And the priests bearing the ark are standing in the midst of the Jordan till the completion of the whole thing which Jehovah commanded Joshua to speak unto the people, according to all that Moses commanded Joshua, and the people haste and pass over.

11 And it cometh to pass when all the people have completed to pass over, that the ark of Jehovah passeth over, and the priests, in the presence of the people;

12 and the sons of Reuben, and the sons of Gad, and the half of the tribe of Manasseh, pass over, by fifties, before the sons of Israel, as Moses had spoken unto them;