John Gill

Gird yourselves, and lament, ye 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 Jer 4:8; howl, ye ministers of the altar; who served there, by laying on and burning the sacrifices, or offering incense: come, lie all night in sackcloth, ye 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; putting up prayers to God, with weeping and lamentations, that he would avert the judgments that were come or were coming upon theme: for the meat offering and the drink offering are withholden from the house of your God; See Gill on Joe 1:9.