Nehemiah 10:35-37

35We will also bring the firstfruits of our land and of every fruit tree to the house of the LORD year by year. 36And we will bring the firstborn of our sons and our livestock, as it is written in the Law, and will bring the firstborn of our herds and flocks to the house of our God, to the priests who minister in the house of our God.

37Moreover, 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.