'Altar' in the Bible

Clothe yourselves with sackclothAnd lament (cry out in grief), O priests;Wail, O ministers of the altar!Come, spend the night in sackcloth [and pray without ceasing],O ministers of my God,For the grain offering and the drink offeringAre withheld from the house of your God.

Let the priests, the ministers of the Lord,Weep between the porch and the altar,And let them say, “Have compassion and spare Your people, O Lord,And do not make Your inheritance (Israel) an object of ridicule,Or a [humiliating] byword among the [Gentile] nations.Why should they say among the peoples,‘Where is their God?’”