The Holy Gospel of Jesus Christ, According to St. Matthew (Author Matthew)
3:11ego quidem vos baptizo in aqua in paenitentiam qui autem post me venturus est fortior me est cuius non sum dignus calciamenta portare ipse vos baptizabit in Spiritu Sancto et igni
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.