Cross reference
Numbers 18:24
24 For the tithe of the children of Israel, which they offer as a heave-offering unto Jehovah, I have given to the Levites for an inheritance: therefore I have said unto them, Among the children of Israel they shall have no inheritance.
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 a heave-offering of it for Jehovah, a tithe of the tithe.
Malachi 3:8-10
8 Will a man rob God? yet ye rob me. But ye say, Wherein have we robbed thee? In tithes and offerings.
9 Ye are cursed with the curse; for ye rob me, even this whole nation.
10 Bring ye the whole tithe into the store-house, that there may be food in my house, and prove me now herewith, saith Jehovah of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough `to receive it'.