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.
The wave breast and the heave shoulder have I taken ... from off the sacrifices of their peace offerings
... - i:e., these were appointed by a divine ordinance to serve as a permanent source of maintenance to the Aaronic priesthood.