The best, Heb. the fat for the best: the fat of wheat is the best of it, Deuteronomy 32:14 Psalms 81:16, Psalms 147:14. The first-fruits of them; as well those which were offered in the name and behalf of the body of the people at the solemn feasts, Leviticus 23:10,17, as those which were required of particular persons, Exodus 22:29, Exodus 23:19; whereof the precise quantity is not determined, but left free to the giver, as an exercise for his piety and charity, only they are enjoined to give the first and the best of them.
Related Commentaries of Numbers 18:12
Numbers 18:12
12 All the besta 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.