First Fruits: As a Heave offering
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Numbers 15:20
From the first of your dough, you are to lift up a cake as a contribution; offer it just like an offering from the threshing floor.
Nehemiah 10:37
Moreover, we will bring to the priests at the storerooms of the house of our God the firstfruits of our dough, of our grain offerings, of the fruit of all our trees, and of our new wine and oil. A tenth of our produce belongs to the Levites, so that they shall receive tithes in all the towns where we labor.
Ezekiel 44:30
The best of all the firstfruits and of every contribution from all your offerings will belong to the priests. You are to give your first batch of dough to the priest, so that a blessing may rest upon your homes.