John Gill Commentary Joel 1:9

"The meal-offering and the drink-offering are cut off from the house of Jehovah; the priests, Jehovah`s ministers, mourn." — Joel 1:9 (ASV)

The meat offering and the drink offering is cut off from the
house of the Lord
The meat offering was made of fine flour, oil, and frankincense; and the drink offering was of wine; and, because of the want of corn and wine, these were not brought to the temple as usual; and which was matter of great grief to religious persons, and especially to the priests, as follows:

the priests, the Lord's ministers, mourn ;
partly because they had no work to do, and could not answer to their character, the ministers of the Lord, in ministering about holy things, and bringing the sacrifices and offerings of the people to him; and partly because of their want of food, their livelihood greatly depending on the offerings brought, part of which belonged to them, and on which they and their families lived.