Exodus 29:35-37

New Revised Standard Version, Anglicised Catholic Edition

³⁵ Thus you shall do to Aaron and to his sons, just as I have commanded you; over seven days you shall ordain them. ³⁶ Also every day you shall offer a bull as a sin-offering for atonement. Also you shall offer a sin-offering for the altar, when you make atonement for it, and shall anoint it, to consecrate it. ³⁷ For seven days you shall make atonement for the altar, and consecrate it, and the altar shall be most holy; whatever touches the altar shall become holy.