Leviticus 7:36

which portions the LORD commanded to be given to them from the day that he anointed them from among the sons of Israel by a perpetual statute throughout their generations.

Leviticus 8:12

And he poured of the anointing oil upon Aaron's head and anointed him, to sanctify him.

Leviticus 8:30

Then Moses took of the anointing oil and of the blood which was upon the altar and sprinkled it upon Aaron and upon his garments and upon his sons and upon his sons' garments with him and sanctified Aaron and his garments, and his sons and his sons' garments with him.

Exodus 40:13-15

And thou shalt put upon Aaron the holy garments and anoint him and sanctify him, that he may be my priest.

Treasury of Scripture Knowledge

Summary

Which the LORD commanded to be given them of the children of Israel, in the day that he anointed them, by a statute for ever throughout their generations.

Bible References

In the day

Leviticus 8:12
And he poured of the anointing oil upon Aaron's head and anointed him, to sanctify him.
Exodus 40:13
And thou shalt put upon Aaron the holy garments and anoint him and sanctify him, that he may be my priest.