John Gill Commentary Joel 1:13

"Gird yourselves [with sackcloth], and lament, ye priests; wail, ye ministers of the altar; come, lie all night in sackcloth, ye ministers of my God: for the meal-offering and the drink-offering are withholden from the house of your God." — Joel 1:13 (ASV)

Gird yourselves, and lament, you priests
Prepare and be ready to raise up lamentation and mourning; or gird yourselves with sackcloth, and mourn in that, as Aben Ezra and Kimchi supply the words; see (Jeremiah 4:8).

howl, you ministers of the altar ;
who served there, by laying on and burning the sacrifices, or offering incense.

come, lie all night in sackcloth, you ministers of my God ;
That is, come into the house of the Lord, as Kimchi; into the court of the priests, and there lie all night, in the sackcloth girded with. Put up prayers to God, with weeping and lamentations, that he would avert the judgments that were come or were coming upon them.

for the meat offering and the drink offering are withheld from the
house of your God; (See Gill on Joel 1:9).