21 Of the first of your dough ye shall give unto the LORD an heave offering throughout your generations.
Numbers 15:21 Cross References - ERV
Exodus 29:28
28 and it shall be for Aaron and his sons as a due for ever from the children of Israel: for it is an heave offering: and it shall be an heave offering from the children of Israel of the sacrifices of their peace offerings, even their heave offering unto the LORD.
Numbers 18:26
26 Moreover thou shalt speak unto the Levites, and say unto them, When ye take of the children of Israel the tithe which I have given you from them for your inheritance, then ye shall offer up an heave offering of it for the LORD, a tithe of the tithe.