Whence the sense might be this, “If I by Beelzebub cast out daemons,” then, according to your own opinion, “the kingdom of God is come upon you,” for the kingdom of the Devil, being thus divided against itself, cannot stand. Thus calling that the kingdom of God, in which the wicked are condemned, and are separated from the faithful, who are now doing penitence for their sins.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Quaest. Ev., i. 5