Exodus 29:35-42
35 “Do for Aaron and his sons everything I have commanded you, taking seven days to ordain them.
36 Sacrifice a bull each day as a sin offering to make atonement. Purify the altar by making atonement for it, and anoint it to consecrate it.
37 For seven days make atonement for the altar and consecrate it. Then the altar will be most holy, and whatever touches it will be holy.
38 “This is what you are to offer on the altar regularly each day: two lambs a year old.
39 Offer one in the morning and the other at twilight.
40 With the first lamb offer a tenth of an ephah of fine flour mixed with a quarter of a hin of oil from pressed olives, and a quarter of a hin of wine as a drink offering.
41 Sacrifice the other lamb at twilight with the same grain offering and its drink offering as in the morning—a pleasing aroma, an offering made to the Lord by fire.
42 “For the generations to come this burnt offering is to be made regularly at the entrance to the Tent of Meeting before the Lord. There I will meet you and speak to you;