Joel 1:9 - Matthew Poole's English Annotations on the Holy Bible

The meat-offering; which by Divine appointment was to be of fine flour, oil, and frankincense, as Leviticus 2:1, &c.; vi. 14, &c. This meat-offering was necessary to every sacrifice offered under the law; so that without the mincha, or meat-offering, the sacrifice was maimed and illegal. The drink-offering; required daily, as appears Exodus 29:40,41 Num 28:8; a fourth part of a hin of wine for one lamb, Numbers 28:7. Is cut off; by the destruction of the vines by the locusts forementioned, all that wine (out of which they ought to, offer the drink-offering) did fail. From the house of the Lord; it was to be poured out, if wine, and part of the meat-offering was to be burnt on the altar, so both were disposed according to the law in the house of the Lord. The priests; sons of Aaron, with the Levites. The Lord's ministers, who did serve the Lord in the services of the temple. Mourn; grieve inwardly, and express it by outward signs. These had more cause than others to mourn, for as they had equal cause with others in respect to God, whose service hereby failed, so the priests, in respect to their private gain and maintenance, had more cause to mourn, their provision was by this means shortened.