4 how he entered into God’s house, and ate the show bread, which was not lawful for him to eat, neither for those who were with him, but only for the priests?
Matthew 12:4 Cross References - WEB
Exodus 25:30
30 You shall set bread of the presence on the table before me always.
Exodus 29:32-33
Leviticus 8:31
31 Moses said to Aaron and to his sons, “Boil the meat at the door of the Tent of Meeting, and there eat it and the bread that is in the basket of consecration, as I commanded, saying, ‘Aaron and his sons shall eat it.’
Leviticus 24:5-9
5 “You shall take fine flour, and bake twelve cakes of it: two tenths of an ephah shall be in one cake.
6 You shall set them in two rows, six on a row, on the pure gold 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 an everlasting covenant on the behalf of the children of Israel.
9 It shall be for Aaron and his sons. They shall eat it in a holy place; for it is most holy to him of the offerings of Yahweh made by fire by a perpetual statute.”