to serve as a sign among you. In the future, when your children ask, ‘What do these stones mean to you?’
We may well imagine how busy Joshua and all the men of war were while they were passing over Jordan, when besides their own marching into an enemy's country, and in the face of the enemy, which could not but occasion them many thoughts of hear, they had their wives, and children, and families, their cattle, and tents, and all their effects, bag and baggage...
Commenting on Joshua 4:1-9
That this may be a sign among you,.... A commemorative one: that when your children ask their fathers in time to come; or "tomorrow" (g) and so in all time, or any time hereafter: saying, what mean you by these stones? what is the reason of setting them up, and in this place, and being just of such a number? (g) Sept. "eras", Pagninus, Montanus.
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.