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, an altar of whole stones, over which no man hath lift up any iron: and they offered thereon burnt offerings unto the LORD, and sacrificed peace offerings.
As Moses the servant of the Lord commanded the children of Israel, as it is written in the book of the law of Moses,....
an altar of whole stones, on which no man hath lift up any iron;
See Gill on "Exodus 20:25",
See Gill on "Deuteronomy 27:5", and,
See Gill on "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,