DC 111:2c And when they have answered "Yes," he shall pronounce them "husband and wife" in the name of the Lord Jesus Christ, and by virtue of the laws of the country and authority
vested in him:
DC 144:3 This action is taken by me pursuant to the authority
vested in me by the terms of Section 43 of the book of Doctrine and Covenants, in connection with other references in the law, notably paragraph 8 of Section 127, all as interpreted by my father, the late President Joseph Smith, in the Saints' Herald of March 12, 1912, and all of which I believe is in complete harmony with precedents established by the church in General Conferences of 1860, 1915, and 1946.
____________________