Nehemiah 10:34-36

34We, the priests, the Levites, and the people, have likewise cast lots for the wood offering, to bring it into the house of our God, according to our fathers' houses, at times appointed, year by year, to burn on the altar of the Lord our God, as it is written in the Law.

35We obligate ourselves to bring the firstfruits of our ground and the firstfruits of all fruit of every tree, year by year, to the house of the Lord;

36also to bring to the house of our God, to the priests who minister in the house of our God, the firstborn of our sons and of our cattle, as it is written in the Law, and the firstborn of our herds and of our flocks;