Exodus 29:37-39

Amplified Bible, Classic Edition

³⁷ Seven days you shall make atonement for the altar and sanctify it [set it apart for God]; and the altar shall be most holy; whoever or whatever touches the altar must be holy (set apart for God’s service).

³⁸ Now this is what you shall offer on the altar: two lambs a year old shall be offered day by day continually.

³⁹ One lamb you shall offer in the morning and the other lamb in the evening;