Leviticus 24:6-9

6and set them in two rows—six per row—on the table of pure gold before the LORD. 7And you are to place pure frankincense near each row, so that it may serve as a memorial portion for the bread, a food offering to the LORD.

8Every Sabbath day the bread is to be set out before the LORD on behalf of the Israelites as a permanent covenant. 9It belongs to Aaron and his sons, who are to eat it in a holy place; for it is to him a most holy part of the food offerings to the LORD—his portion forever.”