Joshua 24:24-27
And the people said unto Joshua, The Lord our God will we serve, and his voice will we obey.
So Joshua made a covenant with the people that day, and set them a statute and an ordinance in Shechem.
And
Joshua wrote these words in the book of the law of God, and took a
great stone, and set it up there under an oak, that was by the sanctuary
of the Lord.
And Joshua said unto all the people, Behold, this
stone shall be a witness unto us; for it hath heard all the words of the
Lord which he spake unto us: it shall be therefore a witness unto you,
lest ye deny your God.