Leviticus 24:5

2 Command the children of Israel, that they bring to you pure olive oil beaten for the light, to cause a lamp to burn continually.

3 Outside of the veil of the testimony, in the tent of meeting, shall Aaron keep it in order from evening to morning before Yahweh continually: it shall be a statute forever throughout your generations.

4 He shall keep in order the lamps on the pure lampstand before Yahweh continually.

5 You shall take fine flour, and bake twelve cakes of it: two tenth parts [of an ephah] shall be in one cake.

6 You shall set them in two rows, six on a row, on the pure table before Yahweh.

7 You shall put pure frankincense on each row, that it may be to the bread for a memorial, even an offering made by fire to Yahweh.

8 Every Sabbath day he shall set it in order before Yahweh continually; it is on the behalf of the children of Israel, an everlasting covenant.