Exodus 29:37-39

New Revised Standard Version Catholic Edition

³⁷ 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.

The Daily Offerings

³⁸ Now this is what you shall offer on the altar: two lambs a year old regularly each day. ³⁹ One lamb you shall offer in the morning, and the other lamb you shall offer in the evening;