John Lightfoot on Luke 22:53

[This is your hour, and the power of darkness.] The serpent himself is now come in Judas; and the seed of the serpent was that rout that came with him, to whom it was fatal to bruise the heel of the Messiah; and now was the hour for that wickedness. It was anciently foretold and predetermined, both as to the thing itself and the instruments; and now all fences lie open, and you may do what you please. The chains of the devil himself are now loosed; and it is permitted to him, without the least check or restraint of Divine Providence, to exert all his furies at pleasure; for now is the power of darkness.

Darkness, is the devil among the allegorists. "It is said, On the first day of the creation, the angel of death [i.e. the devil] was created, according as it is written, There was darkness upon the face of the deep; that is, the angel of death, who darkeneth the eyes of men."