John Chrysostom
Catena Aurea · Matthäusevangelium 21
And he left them, and went out of the city into Bethany; and he lodged there. Now in the morning as he returned into the city, he hungered. And when he saw a fig tree in the way, he came to it, and found nothing thereon, but leaves only, and said unto it, Let no fruit grow on thee henceforward for ever. And presently the fig tree withered away. And when the disciples saw it, they marvelled, saying, How soon is the fig tree withered away! Jesus answered and said unto them, Verily I say unto you, If ye have faith, and doubt not, ye shall not only do this which is done to the fig tree, but also if ye shall say unto this mountain, Be thou removed, and be thou cast into the sea; it shall be done. And all things, whatsoever ye shall ask in prayer believing, ye shall receive.
And that you may learn that this was done for their sakes, to the end, namely, that they should be stirred up to confidence, hear what is said further. Jesus answered and said unto them, Verily I say unto you, if ye shall have faith.