6 Again, what contradiction is there between the fact that Christ partook of food after His resurrection, and the doctrine that in the promised resurrection-state there shall be no need of food, when we read that angels also have partaken of food of the same kind and in the same way, not in empty and illusive simulation, but in unquestionable reality; not, however, under the pressure of necessity, but in the free exercise of their power? For water is absorbed in one way by the thirsting earth, in another way by the glowing sunbeams; in the former we see the effect of poverty, in the latter of power. Now the body of that future resurrection-state shall be imperfect in its felicity if it be incapable of taking food; imperfect, also, if, on the other hand, it be dependent on food. I might here enter on a fuller discussion concerning the changes possible in the qualities of bodies, and the dominion which belongs to higher bodies over those which are of inferior nature; but I have resolved to make my reply short, and I write this for mind so endowed that the simple suggestion of the truth is enough for them.
Source: Letters (New Advent)