Ezekiel 46:23

21Then he brought me out into the outer court and caused me to pass by the four corners of the court; and behold, in every corner of the court there was a court.

22In the four corners of the court there were courts enclosed, forty cubits long and thirty wide. These four in the corners were the same size.

23There was a wall around in them, around the four, and boiling places were made under the walls all around.

24Then he said to me, “These are the boiling houses, where the ministers of the house shall boil the sacrifice of the people.”