John Chrysostom — as excerpted in the Catena Aurea on Matthew 21:17-22

“This was only a supposition of the disciples that it was cursed because it had not fruit; for another Evangelist says that it was not yet the season. Why then was it cursed? For the disciples’ sake, that they might learn that He had power to wither up those who crucified Him. And He worked this miracle in that which of all plants is the most juicy, that the greatness of the miracle might be more apparent. And when aught of this kind is done to brutes or vegetables, ask not whether the fig were with justice withered up, seeing it was not the season for its fruit; for to enquire thus were extreme madness, for in such creatures there can be neither fault nor punishment; but consider the miracle, and admire the Worker of it.”