Reference

Numbers 18:32

And ye shall bear no sin by reason of it, when ye have heaved from it the best of it: neither shall ye pollute the holy things of the children of Israel, lest ye die.
30

Therefore thou shalt say unto them, When ye have heaved the best thereof from it, then it shall be counted unto the Levites as the increase of the threshingfloor, and as the increase of the winepress.

31

And ye shall eat it in every place, ye and your households: for it is your reward for your service in the tabernacle of the congregation.

32

And ye shall bear no sin by reason of it, when ye have heaved from it the best of it: neither shall ye pollute the holy things of the children of Israel, lest ye die.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

Israel-Specific Promises

The verse is a command and a warning to the Levites regarding their handling of tithes, not a promise to the nation of Israel.