Leviticus 24:3-8

Outside the veil of the testimony, in the tent of meeting, Aaron shall arrange it from evening to morning before the LORD regularly. It shall be a statute forever throughout your generations. He shall arrange the lamps on the lampstand of pure gold before the LORD regularly. “You shall take fine flour and bake twelve loaves from it; two tenths of an ephah shall be in each loaf. And you shall set them in two piles, six in a pile, on the table of pure gold before the LORD. And you shall put pure frankincense on each pile, that it may go with the bread as a memorial portion as a food offering to the LORD. Every Sabbath day Aaron shall arrange it before the LORD regularly; it is from the people of Israel as a covenant forever.