Mary Elizabeth Rollins Lightner states that an angel came on three occasions with a drawn sword.
"An angel came to him [Joseph Smith] and the last time he came with a drawn sword in his hand and told Joseph if he did not go into that principle, he would slay him. Joseph said he talked to him soberly about it, and told him it was an abomination and quoted scripture to him. He said in the Book of Mormon it was an abomination in the eyes of the Lord, and they were to adhere to these things except the Lord speak… [The Prophet reported that] the angel came to me three times between the years of 1834 and 1842 and said I was to obey that principle or he would slay me." (ary Elizabeth Rollins Lightner Smith, "Remarks" at Brigham Young University, April 14. 1905, vault MSS 363, fd 6. 2-3. See also "Statement" signed Feb. 8, 1902, Vesta Crawford Papers, Univ. of Utah, Marriott Library, MS 125, bx 1 fd 11)
"I did not believe. If God told him so, why did he not come and tell me? The angel told him I should have a witness. An angel came to me…"
I was sealed to Joseph Smith the Prophet by commandment, in the spring of 1831. The Savior appeared and commanded him to seal me up to everlasting life, gave me to Joseph to be with him in his kingdom even as he is in the Father's Kingdom. In 1834, [Joseph] was commanded to take me for a wife. I was a thousand miles from him. He got afraid. The angel came to him three times, the last time with a drawn sword and threatened his life. I did not believe. If God told him so, why did he not come and tell me? The angel told him I should have a witness. An angel came to me – it went through me like lightning – I was afraid. Joseph Said he came with more revelation and knowledge than Joseph ever dare reveal. (Brigham Young sealed me to him, for time and all eternity – Feb. 1842.)
[Source: Exploring Mormonism: Polygamy Timeline, http://www.exploringmormonism.com/polygamy-timeline/]