The Holy Gospel of Jesus Christ, According to St. Matthew (Author Matthew)
17:20dicit illis propter incredulitatem vestram amen quippe dico vobis si habueritis fidem sicut granum sinapis dicetis monti huic transi hinc et transibit et nihil inpossibile erit vobis
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.