Matthew 21:21
King James Version
“Jesus answered and said unto them, Verily I say unto you, If ye have faith, and doubt not, ye shall not only do this 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.”
Context
18Now in the morning as he returned into the city, he hungered.
19And 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.
20And when the disciples saw they marvelled, saying, How soon is the fig tree withered away!
21Jesus answered and said unto them, Verily I say unto you, If ye have faith, and doubt not, ye shall not only do this 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.
22And all things, whatsoever ye shall ask in prayer, believing, ye shall receive.
23And when he was come into the temple, the chief priests and the elders of the people came unto him as he was teaching, and said, By what authority doest thou these things? and who gave thee this authority?
24And Jesus answered and said unto them, I also will ask you one thing, which if ye tell me, I in like wise will tell you by what authority I do these things.