The vestry - The sacred robes of the Baal priests seem to have been of linen, and were probably white. The vestry here mentioned may, probably, be the robe-chamber of the royal palace, from which the king gave a festal garment to each worshipper.
Related Commentaries of 2 Kings 10:22
2 Kings 10:22
22 And he said unto him that was over the vestry, Bring forth vestments for all the worshippers of Baal. And he brought them forth vestments.