Ezekiel 4:1-3

1“Now you, son of man, take a brick and lay it before you. Engrave on it a city, Jerusalem.

2Lay siege against it, build earthworks against it, raise an assault ramp against it; pitch camps against it and place battering rams all around it.

3Then take an iron plate and set it up as an iron wall between you and the city. Set your face toward it so that it is under siege. So you will lay siege against it. This will be a sign to the house of Israel.