Cross reference
Luke 6:4
4 how he entered into the house of God, and took and ate the showbread, and gave also to them that were with him; which it is not lawful to eat save for the priests alone?
Leviticus 24:5-9
5 And thou shalt take fine flour, and bake twelve cakes thereof: two tenth parts `of an ephah' shall be in one cake.
6 And thou shalt set them in two rows, six on a row, upon the pure table before Jehovah.
7 And thou shalt put pure frankincense upon each row, that it may be to the bread for a memorial, even an offering made by fire unto Jehovah.
8 Every sabbath day he shall set it in order before Jehovah continually; it is on the behalf of the children of Israel, an everlasting covenant.
9 And it shall be for Aaron and his sons; and they shall eat it in a holy place: for it is most holy unto him of the offerings of Jehovah made by fire by a perpetual statute.