Hilary of Poitiers

Now what, you ask, is this fruit that is to be dispensed? That assuredly of which this same apostle is speaking when he says, "And he will change our vile body, that it may be fashioned like his glorious body." Thus he will give us those fruits of his that he has already brought to perfection in that one whom he has chosen to himself, who is portrayed under the image of a tree, whose mortality he has utterly done away and has raised him to share in his own immortality.