Joshua 24:25-27

25So Joshua made a covenant with the people that day, and made for them a statute and an ordinance at Shechem.

26And Joshua wrote these words in the Book of the Law of God. Then he took a large stone and set it up there under the oak that was in [the courtyard of] the sanctuary of the Lord.

27Joshua then said to all the people, “Look, this stone shall serve as a witness against us, for it has heard all the words of the Lord which He spoke to us; so it shall be a witness against you, so that [afterward] you do not deny your God.”