Leviticus 24:1

After the foregoing particulars relating to the annual festivals and assemblies, and all things prepared for the tabernacle service, he proceeds to remind the Israelites of executing the orders before given, about providing at the public charge all materials for the daily service; and in particular a sufficient quantity of oil for the lamps of the golden candlestick, which were to burn continually in the holy place without the veil, the priests in waiting being obliged to keep this candlestick clean and pure, and to trim and supply the lamps morning and evening.