Ezekiel 4:1 WEB

¹  You also, son of man, take a tile, and lay it before you, and portray on it a city, even Jerusalem:

²  and lay siege against it, and build forts against it, and cast up a mound against it; set camps also against it, and plant battering rams against it round about.

³  Take for yourself an iron pan, and set it for a wall of iron between you and the city: and set your face toward it, and it shall be besieged, and you shall lay siege against it. This shall be a sign to the house of Israel.