Deuteronomy 6:20

¹⁴It shall be, when your son asks you in time to come, saying, ‘What is this?’ that you shall tell him, ‘By strength of hand the LORD brought us out from Egypt, from the house of bondage.

²⁶It will happen, when your children ask you, ‘What do you mean by this service?’

⁶that this may be a sign among you, that when your children ask in the future, saying, ‘What do you mean by these stones?’ ⁷then you shall tell them, ‘Because the waters of the Jordan were cut off before the ark of the LORD’s covenant. When it crossed over the Jordan, the waters of the Jordan were cut off. These stones shall be for a memorial to the children of Israel forever.’”

²¹He spoke to the children of Israel, saying, “When your children ask their fathers in time to come, saying, ‘What do these stones mean?’ ²²Then you shall let your children know, saying, ‘Israel came over this Jordan on dry land. ²³For the LORD your God dried up the waters of the Jordan from before you until you had crossed over, as the LORD your God did to the Red Sea, which he dried up from before us, until we had crossed over, ²⁴that all the peoples of the earth may know that the LORD’s hand is mighty, and that you may fear the LORD your God forever.’”

⁷and you shall teach them diligently to your children, and shall talk of them when you sit in your house, and when you walk by the way, and when you lie down, and when you rise up.

⁶Train up a child in the way he should go, and when he is old he will not depart from it.