“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.”
King James Version (KJV)
21:21 Jesus answering, said, If ye have faith - Whence we may learn, that one great end of our Lord in this miracle was to confirm and increase their faith: another was, to warn them against unfruitfulness. #Mt 17:20|.
Mt 21:21,22 If ye have faith. See PNT "Mt 17:19.