Ambrose of Milan — as excerpted in the Catena Aurea on Luke 15:17-24

“He is dead who was. Therefore the Gentiles are not, the Christian is. Here however might be understood one individual of the human race; Adam was, and in him we all were. Adam perished, and in him we all have perished. Man then is restored in that Man who has died. It might also seem to be spoken of one working repentance, because he dies not who has not at one time lived. And the Gentiles indeed when they have believed are made alive again by grace. But he who has fallen recovers by repentance.”