While visiting with brother Joseph in Philadelphia, a very large church was opened for him to preach in, and about three thousand people assembled to hear him. ... brother Joseph arose like a lion about to roar; and being full of the Holy Ghost, spoke in great power, bearing testimony of the visions he had seen, the ministering of angels which he had enjoyed; and how he had found the plates of the Book of Mormon, and translated them by the gift and power of God. He commenced by saying, "If nobody else had the courage to testify of so glorious a message from Heaven, and of the finding of so glorious a record, he felt to do it, in justice to the people, and leave the event with God." The entire congregation was astounded; electrified, as it were, and overwhelmed with the sense of the truth and power by which he spoke, and the wonders which he related. A lasting impression was made; many souls were gathered into the fold. And I bear witness, that he, by his faithful and powerful testimony, cleared his garments of their blood.
[The Woodland Institute, http://www.woodlandinstitute.com]