GOD'S WORD® Translation
Jesus answered them, "I can guarantee this truth: If you have faith and do not doubt, you will be able to do what I did to the fig tree. You could also say to this mountain, 'Be uprooted and thrown into the sea,' and it will happen.

American Standard Version
And Jesus answered and said unto them, Verily I say unto you, If ye have faith, and doubt not, ye shall not only do what is done to the fig tree, but even if ye shall say unto this mountain, Be thou taken up and cast into the sea, it shall be done.

Berean Study Bible
“Truly I tell you,” Jesus replied, “if you have faith and do not doubt, not only will you do what was done to the fig tree, but even if you say to this mountain, ‘Be lifted up and thrown into the sea,’ it will happen.

Douay-Rheims Bible
And Jesus answering, said to them: Amen, I say to you, if you shall have faith, and stagger not, not only this of the fig tree shall you do, but also if you shall say to this mountain, Take up and cast thyself into the sea, it shall be done.

English Revised Version
And Jesus answered and said unto them, Verily I say unto you, If ye have faith, and doubt not, ye shall not only do what is done to the fig tree, but even if ye shall say unto this mountain, Be thou taken up and cast into the sea, it shall be done.

King James Bible
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.

World English Bible
Jesus answered them, "Most certainly I tell you, if you have faith, and don't doubt, you will not only do what was done to the fig tree, but even if you told this mountain, 'Be taken up and cast into the sea,' it would be done.

Young's Literal Translation
And Jesus answering said to them, 'Verily I say to you, If ye may have faith, and may not doubt, not only this of the fig-tree shall ye do, but even if to this mount ye may say, Be lifted up and be cast into the sea, it shall come to pass;

Matthew 21:21 Additional Translations ...