Smith was a close advisor and confidant to his brother Joseph as the latter produced the
Book of Mormon and established the
Church of Christ. In June 1829, Smith was
baptized in
Seneca Lake, New York. He was one of the
Eight Witnesses who swore to the reality of a set of
golden plates inscribed with the Book of Mormon. He also said he saw the
angel Moroni. When the Church of Christ was organized on April 6, 1830, six men signed their names as charter members; at the age of 30, Hyrum Smith was the oldest of the six. Smith served as presiding officer of a church branch in
Colesville, New York, and was one of the first Latter Day Saint missionaries in the surrounding area. , and Hyrum Smith As the church headquarters and membership moved west, Smith and his family relocated. In 1831, he established a home in
Kirtland, Ohio. During his residence there, he served as foreman of the
quarry providing stone for the
Kirtland Temple. Between 1831 and 1833, he served proselyting missions to
Missouri and
Ohio. In 1834, under the direction of Joseph Smith, he recruited members for a militia,
Zion's Camp, and traveled with the group to the aid of the Latter Day Saints in Missouri. He was appointed Second Counselor in the church's
First Presidency in November 1837. In 1838 and 1839, Hyrum, Joseph and three other church leaders shared a
jail cell in
Liberty, Missouri, while awaiting trial. After relocating to
Nauvoo, Illinois, Smith became the church's
Presiding Patriarch, a position first held by his father, Joseph Smith Sr. He also replaced
Oliver Cowdery as
Assistant President of the Church; in this capacity, Smith acted as
President of the Church in Joseph's absence and was designated to be Joseph's successor if he were killed or incapacitated. Although Hyrum Smith was never explicitly ordained to the
priesthood office of
apostle, "his appointment as assistant president may have included such authority". When warned of possible danger, Joseph urged Hyrum Smith and his family to flee to
Cincinnati, Ohio. Hyrum refused and, in 1844, traveled with Joseph to
Carthage, Illinois, where both were charged with
riot and
treason. Joseph, Hyrum,
John Taylor and
Willard Richards were held awaiting trial in a
jail in Carthage. On June 27, 1844, the building was attacked by a mob of between sixty and two hundred men. While attempting to barricade the door to prevent the mob from entering, Hyrum was shot in the face on the left side of the nose. After staggering back, another ball fired through the window struck him in the back, passed through his body, and struck his watch in his vest pocket. As Hyrum Smith fell to the floor, he exclaimed, "I am a dead man," as he died. Taylor was struck by several bullets but survived with the help of Richards.
Joseph was hit by at least two shots, exclaimed "O Lord, My God," and fell through a second-story window to the ground where he was shot again. Because of his position as Assistant President of the Church, it is likely that Smith would have succeeded Joseph and become the next president of the church had he outlived his brother. ==Political involvement==