'Gird Yourselves' in the Bible

“Be broken, O peoples, and be shattered;And give ear, all remote places of the earth.Gird yourselves, yet be shattered;Gird yourselves, yet be shattered.

“Wail, O Heshbon, for Ai has been destroyed!Cry out, O daughters of Rabbah,Gird yourselves with sackcloth and lament,And rush back and forth inside the walls;For Malcam will go into exileTogether with his priests and his princes.

Gird yourselves with sackclothAnd lament, O priests;Wail, O ministers of the altar!Come, spend the night in sackclothO ministers of my God,For the grain offering and the drink offeringAre withheld from the house of your God.