Exodus 27:20,21
And you shall command the children of Israel, that they bring you pure oil olive beaten for the light, to cause the lamp to burn always.
Nave's Topical Index—AKJV

Exodus 30:8
And when Aaron lights the lamps at even, he shall burn incense on it, a perpetual incense before the LORD throughout your generations.
Nave's Topical Index—AKJV

Leviticus 24:3,4
Without the veil of the testimony, in the tabernacle of the congregation, shall Aaron order it from the evening to the morning before the LORD continually: it shall be a statute for ever in your generations.
Nave's Topical Index—AKJV

Numbers 8:3
And Aaron did so; he lighted the lamps thereof over against the candlestick, as the LORD commanded Moses.
Nave's Topical Index—AKJV