Leviticus 24:2-4

24:2 Command the children of Israel, that they bring unto thee pure oil olive beaten for the light, to cause the lamps to burn continually. 24:3 Without the vail of the testimony, in the tabernacle of the congregation, shall Aaron order it from the evening unto the morning before the LORD continually: [it shall be] a statute for ever in your generations. 24:4 He shall order the lamps upon the pure candlestick before the LORD continually.