Joshua 4:20-24

20Those twelve stones, which they had taken out of the Jordan, Joshua set up in Gilgal.

21Then he said to Bnei-Yisrael saying, “When your children ask their fathers in time to come saying: ‘What are these stones?’

22then you will inform your children saying, ‘Israel crossed this Jordan on dry ground.’

23For Adonai your God dried up the waters of Jordan before you until you crossed—just as Adonai your God did to the Sea of Reeds, which He dried up before us until we crossed over—

24so that all the peoples of the earth may know Adonai’s hand is mighty, and so that you may fear Adonai your God forever.”