Numbers 18:12 (BSB)

I give you all the freshest olive oil and all the finest new wine and grain that the Israelites give to the LORD as their firstfruits.

From Numbers 18. Also in the ESV.

Commentary on Numbers 18:12

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 18:8-19: The priest's service is called a warfare; and who goes a warfare at his own charges? As they were well employed, so they were well provided for, and well paid. None shall serve God for nought. All believers are spiritual priests, and God has promised to take care of them; they shall dwell in the land, and verily they shall be fed, and shall not want any good thing.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 18:12: All the best of the oil, and all the best of the wine, and of the wheat,.... Or the "fat" (i) of them; the fat of anything being the best, see Deu 32:14, the firstfruits of them: the oil, and wine, and wheat: which they shall offer unto the Lord, them have I given thee; this Jarchi calls the great heave offering, the firstfruits of...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Numbers 18:8-20: THE PRIESTS' PORTION. (Num 18:8-20) the Lord spake unto Aaron, Behold, I also have given thee the charge of my heave offerings--A recapitulation is made in this passage of certain perquisites specially appropriated to the maintenance of the priests. They were parts of the votive and freewill offerings, including both meat and bread, wine and oil, and the first-fruits, which formed a large and valuable item.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Numbers 18:12: All the best of the oil, and all the best of the wine, and of the wheat, the firstfruits of them which they shall offer unto the LORD, them have I given thee. (h) Or, fat; chiefest.