Joshua 8:31

As Moses the servant of the Lord commanded the children of Israel, as it is written in the book of the law of Moses,....

Deuteronomy 27:5;

an altar of whole stones, on which no man hath lift up [any] iron;

Exodus 20:25,

Deuteronomy 27:5, and,

Deuteronomy 27:6:

and they offered thereon burnt offerings unto the Lord, and sacrificed peace offerings; by way of thanksgiving for the good land they were introduced into, and this was what they were ordered to do by Moses,

Deuteronomy 27:6.