as the sheaf was not burned upon the altar, but only presented symbolically to the Lord by waving, and then handed over to the priests, an altar-gift had to be connected with it, - namely, a yearling sheep as a burnt-offering, a meat-offering of two-tenths of an ephah of fine flour mixed with oil, and a drink-offering of a quarter of a hin of wine, - to give expression to the obligation and willingness of the congregation not only to enjoy their earthly food, but to strengthen all the members of their body for growth in holiness and diligence in good works. The burnt-offering, for which a yearling lamb was prescribed, as in fact for all the regular festal sacrifices, was of course in addition to the burnt-offerings prescribed in Num 28:19-20, for every feast-day. The meat-offering, however, was not to consist of one-tenth of an ephah of fine flour, as on other occasions (Exo 29:40; Num 28:9, Num 28:13, etc.), but of two-tenths, that the offering of corn at the harvest-feast might be a more plentiful one than usual.
verses 15-17
The law for the special observance of the feast of Harvest (Exo 23:16) is added here without any fresh introductory formula, to show at the very outset the close connection between the two feasts. Seven whole weeks, or fifty days, were to be reckoned from the day of the offering of the sheaf, and then the day of first-fruits (Num 28:26) or feast of Weeks (Exo 34:22; Deu 16:10) was to be celebrated. From this reckoning the feast received the name of Pentecost (ἡ πεντηκοστή, Act 2:1). That שׁבּתות (Lev 23:15) signifies weeks, like שׁבעות in Deu 16:9, and τὰ σάββατα in the Gospels (e.g., Mat 28:1), is evident from the predicate תּמימת, “complete,” which would be quite unsuitable if Sabbath-days were intended, as a long period might be reckoned by half weeks instead of whole, but certainly not by half Sabbath-days. Consequently “the morrow after the seventh Sabbath” (Lev 23:16) is the day after the seventh week, not after the seventh Sabbath. On this day, i.e., fifty days after the first day of Mazzoth, Israel was to offer a new meat-offering to the Lord, i.e., made of the fruit of the new harvest (Lev 26:10), “wave-loaves” from its dwellings, two of two-tenths of an ephah of fine flour baked leavened, like the bread which served for their daily food, “as first-fruits unto the Lord,” and of the wheat-harvest (Exo 34:22), which fell in the second half of May and the first weeks of June (Robinson, Palestine),
