Joshua 4:7 in the King James Version
Then ye shall answer them, That the waters of Jordan were cut off before the ark of the covenant of the LORD; when it passed over Jordan, the waters of Jordan were cut off: and these stones shall be for a memorial unto the children of Israel for ever.
Context
6 that this may be a sign among you, that when your children ask in the future, saying, ‘What do you mean by these stones?’
7 then 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.’”
8 The children of Israel did as Joshua commanded, and took up twelve stones out of the middle of the Jordan, as the LORD spoke to Joshua, according to the number of the tribes of the children of Israel. They carried them over with them to the place where they camped, and laid them down there.