Joshua 4:20-22

Young's Literal Translation

²⁰ and these twelve stones, which they have taken out of the Jordan, hath Joshua raised up in Gilgal.

²¹ And he speaketh unto the sons of Israel, saying, `When your sons ask their fathers hereafter, saying, What [are] these stones?

²² then ye have caused your sons to know, saying, On dry land Israel passed over this Jordan;