Exodus 20:23-25 Living Bible (TLB)
23 Remember, you must not make or worship idols made of silver or gold or of anything else!
24 “The altars you make for me must be simple altars of earth. Offer upon them your sacrifices to me—your burnt offerings and peace offerings of sheep and oxen. Build altars only where I tell you to, and I will come and bless you there. 25 You may also build altars from stone, but if you do, then use only uncut stones and boulders. Don’t chip or shape the stones with a tool, for that would make them unfit for my altar.