The short answer
Yes. Helen Mar Kimball was fourteen and Joseph Smith was thirty-seven when they entered a plural sealing in Nauvoo in 1843. Helen later recalled expecting it to be “for eternity alone.” The surviving accounts do not establish that they had sexual relations. Compare the evidence
Helen wrote that Joseph promised exaltation for her and her family if she accepted. She said she agreed because of that promise. She also described social losses she had not expected. The promise, her age, and the role of her father and Church president are all relevant to how freely she could decide. Read Helen’s account of the decision
What to say
“Yes, Helen was fourteen. Her own account is the best place to start. She describes a sealing she expected to affect the next life, a promise about her family that led her to accept, and costs she discovered afterward. I take those costs seriously. If someone says they know the sealing was sexual, I’d ask which source establishes that.”
How old were Helen and Joseph?
Helen Mar Kimball was fourteen, and Joseph Smith was thirty-seven. The Joseph Smith Papers dates the sealing to about May 1843. Helen gives August 22, 1828, as her birth date in the autobiographical letter she wrote to her children in 1881. Her father, Heber C. Kimball, introduced the proposal. The Church describes Helen as Joseph’s youngest plural wife. Helen’s letter, MS 744 · Transcription · Joseph Smith Papers chronology · Church essay
The CES Letter points to their ages and Joseph’s promise of exaltation for Helen and her family. LDS Discussions argues that the promise put spiritual pressure on her and acknowledges that whether the sealing involved sex is unknown. Both arguments draw on Helen’s 1881 account. CES Letter, Polygamy · LDS Discussions, The Proposals
Was the sealing sexual?
In her 1881 letter, Helen uses a poem to describe what she expected at fourteen. She recalls thinking the step was “for eternity alone” and that she would still be free in this life. The next lines describe losing friends and being shut out of social life. Read the phrase as part of her account of what she expected and what the sealing cost her. It is her recollection decades later, rather than a transcript of the ceremony. The Church’s history reads her words as evidence that the relationship likely did not involve sexual relations. Helen’s poem · Church history profile
In 1848, Catherine Lewis published a report that she had heard Helen say she would have declined if she had known it was “any thing more than ceremony.” That is Lewis’s account of a conversation, not a statement written by Helen. It raises a question about what Helen had understood. The phrase can encompass social and other consequences of the sealing, and Lewis names no sexual act in the passage. Neither source establishes that the sealing was consummated. Lewis, Narrative, p. 19
What pressure did Helen describe?
Helen recalled that her father offered the match to connect their family with Joseph. She remembered Joseph telling her the sealing would ensure “your eternal salvation and exaltation” and extend the promise to her father’s household and kindred. She said the reward led her to accept. She also recalled her mother’s anguish and said she herself did not see the difficulties ahead. These are the words of the participant recalling the decision in 1881. They give concrete reasons to ask how much room a fourteen-year-old felt she had to refuse a request from her father and her prophet. Helen’s letter
Helen later married Horace Whitney for time in 1846 and publicly defended plural marriage. In her letter she also expressed gratitude for the promised eternal bonds. Her mature convictions are part of her story, alongside her account of the burden she took on as a teenager. Helen’s 1882 pamphlet, pp. 11–13 · Church history profile
How can a Latter-day Saint respond?
Start with Helen’s age and words. Her experience fits the Latter-day Saint idea that sealing can bind families beyond death. Her account also gives us reason to take the pressure seriously. Doctrine and Covenants 121 teaches that priesthood influence rests on persuasion, gentleness, and sincere love. Apply that standard by asking what Helen understood, how a promise involving her whole family shaped the choice, and what freedom she had to decline. You can believe in sealing and take those questions seriously. Doctrine and Covenants 121:41–42 · D&C 132 and plural marriage
