“And you, son of man, take a brick and lay it before you, and engrave on it a city, even Jerusalem.
Here God begins to speak more openly by means of his servant, and not to speak only, but to signify by an outward symbol what he wishes to be uttered by his mouth. Hence he orders the Prophet to paint Jerusalem on a brick Take therefore, he says, a brick, and place it in thy sight: then paint on it a city, even Jerusalem This...
The prophet is here ordered to represent to himself and others by signs which would be proper and powerful to strike the fancy and to affect the mind, the siege of Jerusalem; and this amounted to a prediction. I. He was ordered to engrave a draught of Jerusalem upon a tile, Eze 4:1.
Commenting on Ezekiel 4:1-8
Thou also, son of man, take thee a tile,.... Or "brick" (z). The Targum renders it, a "stone"; but a tile or brick, especially one that is not dried and burned, but green, is more fit to cut in it the figure of a city.