Exodus 20:24-26

Revised Standard Version

²⁴ An altar of earth you shall make for me and sacrifice on it your burnt offerings and your peace offerings, your sheep and your oxen; in every place where I cause my name to be remembered I will come to you and bless you. ²⁵ And if you make me an altar of stone, you shall not build it of hewn stones; for if you wield your tool upon it you profane it. ²⁶ And you shall not go up by steps to my altar, that your nakedness be not exposed on it.’