Leviticus 24:5-9

“And you shall take fine flour and bake twelve cakes with it. Two-tenths of an ephah shall be in each cake. You shall set them in two rows, six in a row, on the pure gold table before the LORD. And you shall put pure frankincense on each row, that it may be on the bread for a memorial, an offering made by fire to the LORD. Every Sabbath he shall set it in order before the LORD continually, being taken from the children of Israel by an everlasting covenant. And it shall be for Aaron and his sons, and they shall eat it in a holy place; for it is most holy to him from the offerings of the LORD made by fire, by a perpetual statute.”