‏ Joshua 4:6-7

6that this may be a sign among you. aWhen your children ask in time to come, ‘What do those stones mean to you?’ 7then you shall tell them that bthe waters of the Jordan were cut off before the ark of the covenant of the Lord. When it passed over the Jordan, the waters of the Jordan were cut off. So these stones shall be to the people of Israel ca memorial forever.”

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