Leviticus 7:34
For the wave breast and the heave shoulder have I taken of the children of Israel from off the sacrifices of their peace offerings, and have given them unto Aaron the priest and unto his sons by a statute for ever from among the children of Israel.
For the wave breast and the heave shoulder have I taken of the children of Israel,.... These two parts were particularly pitched upon and selected:
from off the sacrifices of their peace offering; the rest being allowed the owners, besides what were burnt:
and have given them unto Aaron the priest and unto his sons, by a statute for ever from among the children of Israel; as long as the priesthood lasted, even to the coming of the Messiah, in whom all these sacrifices would have their accomplishment and their end.