Exodus 29:27

And thou shall sanctify the breast of the wave offering
Set it apart for the use of the priest in all succeeding ages:

and the shoulder of the heave offering:
as the breast was waved from one hand to another, or cast from the hand of one to the hand of another; the shoulder was heaved up, or cast up and caught again: this also was to be sanctified or set apart for the priest's use, ( Leviticus 7:32-34 ) ,

which is waved, and which is heaved up of the ram of the consecration:
the breast was waved and the shoulder heaved:

even of that which is for Aaron, and of that which is for his sons;
as these two parts before mentioned in peace offerings were.