Exodus 20:25
And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone; for if thou lift up thy tool upon it, thou hast polluted it.
Deuteronomy 27:5-6
And there shalt thou build an altar unto the LORD thy God, an altar of stones; thou shalt not lift up any iron tool upon them.
Joshua 8:31
as Moses, the slave, of the LORD had commanded the sons of Israel, as it is written in the book of the law of Moses, an altar of whole stones, over which no one lifted up any iron tool; and they offered burnt offerings upon it unto the LORD and sacrificed peace offerings.
Treasury of Scripture Knowledge
Summary
And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it.
General references
Bible References
And
Deuteronomy 27:5
And there shalt thou build an altar unto the LORD thy God, an altar of stones; thou shalt not lift up any iron tool upon them.
Joshua 8:31
as Moses, the slave, of the LORD had commanded the sons of Israel, as it is written in the book of the law of Moses, an altar of whole stones, over which no one lifted up any iron tool; and they offered burnt offerings upon it unto the LORD and sacrificed peace offerings.
General references
Leviticus 16:33
and he shall reconcile the holy sanctuary and reconcile the tabernacle of the testimony; he shall also reconcile the altar and the priests and all the people of the congregation.