Joshua 4:21
“And he spake unto the children of Israel, saying, When your children shall ask their fathers in time to come, saying, What mean these stones?”
And the people came up out of Jordan on the tenth day of the first month, and encamped in Gilgal, in the east border of Jericho.
And those twelve stones, which they took out of Jordan, did Joshua pitch in Gilgal.
And he spake unto the children of Israel, saying, When your children shall ask their fathers in time to come, saying, What mean these stones?
Then ye shall let your children know, saying, Israel came over this Jordan on dry land.
For the Lord your God dried up the waters of Jordan from before you, until ye were passed over, as the Lord your God did to the Red sea, which he dried up from before us, until we were gone over:
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes have seen, and lest they depart from thy heart all the days of thy life: but teach them thy sons, and thy sons’ sons;”
“One generation shall praise thy works to another, and shall declare thy mighty acts.”
“That this may be a sign among you, that when your children ask their fathers in time to come, saying, What mean ye by these stones?”
“Sing unto him, sing psalms unto him: talk ye of all his wondrous works.”
“That this may be a sign among you, that when your children ask their fathers in time to come, saying, What mean ye by these stones?”