Nehemiah 10:37

“You shall surely tithe all the produce from what you sow, which comes out of the field every year.

I also came to know that the portions of the Levites had not been given them, so the Levites and the singers who did the work had fled, each to his own field.

All Judah then brought the tithe of the grain, new wine, and oil into the storehouses.

“And the first of all the first fruits of every kind and every contribution of every kind, from all your contributions, shall be for the priests; you shall also give to the priest the first of your dough to cause a blessing to rest on your house.

And if the first piece of dough is holy, the lump is also; and if the root is holy, the branches are too.