Andrew of Caesarea
One day indicates either the suddenness and shortness of the time when mourning, ruin, and burning by fire will come upon this city through sword, famine, and plague, or the course of that day on which this city will suffer as foretold. When enemies take possession of a city, one day is enough to inflict every kind of oppression and many forms of death upon the conquered. God is almighty both to save those who have pleased Him and to punish unrepentant sinners.