you are to tell them, ‘The waters of the Jordan were cut off before the ark of the covenant of the LORD. When it crossed the Jordan, the waters were cut off.’ Therefore these stones will be a memorial to the Israelites forever.”
Jewish Publication Society of America Version (JPS1917) - Joshua 4:7 >then ye shall say unto them: Because the 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; and these stones shall be for a memorial unto the children of Israel for ever.'