Titus of Bostra
Catena Aurea · Lukasevangelium 13
There were present at that season some that told him of the Galilæans, whose blood Pilate had mingled with their sacrifices. And Jesus answering said unto them, Suppose ye that these Galilæans were sinners above all the Galilæans, because they suffered such things? I tell you, Nay: but, except ye repent, ye shall all likewise perish. Or those eighteen, upon whom the tower in Siloam fell, and slew them, think ye that they were sinners above all men that dwelt in Jerusalem? I tell you, Nay: but, except ye repent, ye shall all likewise perish.
Now one tower is compared to the whole city, that the destruction of a part may alarm the whole. Hence it is added, But, except ye repent, ye shall all likewise perish; as if He said, The whole city shall shortly be smitten if the inhabitants continue in impenitence.