Yehoshua 4:5

5 And Yehoshua said unto them, Pass over before the Aron Hashem Eloheichem into the middle of the Yarden, and take you up every ish of you an even (stone) upon his shoulder, according unto the number of the Shivtei Bnei Yisroel;

Yehoshua 4:5 Meaning and Commentary

Joshua 4:5

And Joshua said unto them
The twelve men:

pass ye over before the ark of the Lord your God into the midst of
Jordan;
that is, they were to go back to Jordan again, which they had passed over, and go into the midst of it, where were the priests bearing the ark; for it is not to be imagined that the ark went along with them, or followed them, they going before it; but they went where that was, just before it, from whence they were to take the stones, as next directed:

and take you up every man of you a stone upon his shoulder;
by which it appears they were large stones they were to take, not what they could carry in their hands, but what they were obliged to take upon their shoulders:

according unto the number of the tribes of the children of Israel;
who had that day passed over Jordan, of which these stones were to be a memorial.

Yehoshua 4:5 In-Context

3 And command ye them, saying, Take you from here out of the middle of the Yarden, out of the place where the feet of the Kohanim stood firm, twelve avanim (stones), and ye shall carry them over with you, and leave them in the malon (lodging place), where ye shall lodge halailah (tonight).

4 Then Yehoshua called the Shneym Asar Ish, whom he had prepared of the Bnei Yisroel, out of every tribe an Ish;

5 And Yehoshua said unto them, Pass over before the Aron Hashem Eloheichem into the middle of the Yarden, and take you up every ish of you an even (stone) upon his shoulder, according unto the number of the Shivtei Bnei Yisroel;

6 That this may be an ot among you, that when your banim ask in time to come, saying, What mean ye by these avanim?

7 Then ye shall answer them, That the waters of the Yarden were cut off from before the Aron Brit Hashem; when it passed over the Yarden, the waters of the Yarden were cut off; and these avanim shall be for a zikaron (memorial) unto the Bnei Yisroel ad olam (forever).