Bible Verses About Altars: To be made of earth, or unhewn stone

`An altar of earth thou dost make for Me, and thou hast sacrificed on it thy burnt-offerings and thy peace-offerings, thy flock and thy herd; in every place where I cause My name to be remembered I come in unto thee, and have blessed thee.

`And if an altar of stones thou dost make to Me, thou dost not build them of hewn work; when thy tool thou hast waved over it, then thou dost pollute it;

and built there an altar to Jehovah thy God, an altar of stones, thou dost not wave over them iron.

Of complete stones thou buildest the altar of Jehovah thy God, and hast caused to ascend on it burnt-offerings to Jehovah thy God,