1 Samuel 21:6

21:6 So the priest gave him holy bread, for there was no bread there other than the bread of the Presence. It had been removed from before the Lord in order to replace it with hot bread on the day it had been taken away.

Exodus 25:30

25:30 You are to set the Bread of the Presence on the table before me continually.

Leviticus 24:5-9

24:5 “You must take choice wheat flour and bake twelve loaves; there must be two tenths of an ephah of flour in each loaf, 24:6 and you must set them in two rows, six in a row, on the ceremonially pure table before the Lord. 24:7 You must put pure frankincense on each row, and it will become a memorial portion for the bread, a gift to the Lord. 24:8 Each Sabbath day Aaron must arrange it before the Lord continually; this portion is from the Israelites as a perpetual covenant. 24:9 It will belong to Aaron and his sons, and they must eat it in a holy place because it is most holy to him, a perpetual allotted portion from the gifts of the Lord.”

Matthew 12:3-4

12:3 He said to them, “Haven’t you read what David did when he and his companions were hungry – 12:4 how he entered the house of God and they ate the sacred bread, which was against the law for him or his companions to eat, but only for the priests?