Ambrose of Milan — as excerpted in the Catena Aurea on Luke 14:15-24

“Or, He sends to the highways and about the hedges, because they are fit for the kingdom of God, who, not absorbed in the desire for present goods, are hastening on to the future, set in a certain fixed path of good will. And who like a hedge which separates the cultivated ground from the uncultivated, and keeps off the incursion of the cattle, know how to distinguish good and evil, and to hold up the shield of faith against the temptations of spiritual wickedness.”