NET

23 I tell you the truth, if someone says to this mountain, ‘Be lifted up and thrown into the sea,’ and does not doubt in his heart but believes that what he says will happen, it will be done for him.

Darby

23 Verily I say to you, that whosoever shall say to this mountain, Be thou taken away and cast into the sea, and shall not doubt in his heart, but believe that what he says takes place, whatever he shall say shall come to pass for him.

KJV

23 “For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith.”