Exodus 27:20
Command the children of Israel that they bring thee the purest oil of the olives, and beaten with a pestle: that a lamp may burn always,

Leviticus 23:44
And Moses spoke concerning the feasts of the Lord to the children of Israel.

Leviticus 24:2
Command the children of Israel, that they bring unto thee the finest and clearest oil of olives, to furnish the lamps continually,

Numbers 4:16
And over them shall be Eleazar the son of Aaron the priest, to whose charge pertaineth the oil to dress the lamps, and the sweet incense, and the sacrifice, that is always offered, and the oil of unction, and whatsoever pertaineth to the service of the tabernacle, and of all the vessels that are in the sanctuary.