Throughout her life, Emma made clear her faith in Joseph’s prophetic calling, the Book of Mormon, and the Restoration of the Church of Jesus Christ to the earth.  For example, the March 1844 minutes from the Relief Society report Emma stating:

If he [Joseph] was a prophet, which he is….

Many years later after the Latter-day Saints had gone west, Parley P. Pratt Jr. returned eastward on a mission in 1877.  Parley P. Pratt Jr. stopped in Nauvoo along the way and reported in a letter home:

The following day, in company with Bro. Jamison, we visited the Temple site and other places of interest, calling in the afternoon upon Emma Smith, who received us with a degree of kindness. She is now seventy-three years of age, with failing health. We took the liberty of asking her, in the spirit of charity, many plain questions, many of which she answered, others she evaded. She stated to us in the most positive terms, that her husband, Joseph Smith, lived and died a true prophet of God.

Other notes from that meeting report Emma remarking, “I believe he [Joseph] was everything he professed to be.”  A few months before she passed away, Emma gave her final testimony to her sons.

Question. What of the truth of Mormonism?

Answer. I know Mormonism to be the truth; and believe the Church to have been established by divine direction. I have complete faith in it. In writing for your father I frequently wrote day after day, often sitting at the table close by him, and dictating hour after hour with nothing between us.

 

Question. Had he not a book or manuscript from which he read, or dictated to you?

Answer. He had neither manuscript nor book to read from.

 

Question. Could he not have had, and you not know it?

Answer. If he had had anything of the kind he could not have concealed it from me.

 

Question. Are you sure that he had the plates at the time you were writing for him?

Answer. The plates often lay on the table without any attempt at concealment, wrapped in a small linen tablecloth, which I had given him to fold them in. I once felt of the plates, as they thus lay on the table, tracing their outline and shape. They seemed to be pliable like thick paper, and would rustle with a metallic sound when the edges were moved by the thumb, as one does sometimes thumb the edges of a book.

 

Question. Where did father and Oliver Cowdery write?

Answer. Oliver Cowdery and your father wrote in the room where I was at work.

 

Question. Could not father have dictated the Book of Mormon to you, Oliver Cowdery and the others who wrote for him, after having first written it, or having first read it out of some book?

Answer. Joseph Smith [and for the first time she used his name direct, having usually used the words, "your father" or "my husband"] could neither write nor dictate a coherent and well-worded letter, let alone dictate a book like the Book of Mormon. And, though I was an active participant in the scenes that transpired, and was present during the translation of the plates, and had cognizance of things as they transpired, it is marvelous to me, “a marvel and a wonder,” as much so as to anyone else.

 

Question. I should suppose that you would have uncovered the plates and examined them?

Answer. I did not attempt to handle the plates, other than I have told you, nor uncover them to look at them. I was satisfied that it was the work of God, and therefore did not feel it to be necessary to do so;

 

Major Bidamon here suggested: Did Mr. Smith forbid your examining the plates? 

Answer. I do not think he did. I knew that he had them, and was not specially curious about them. I moved them from place to place on the table, as it was necessary in doing my work.

 

Question. Mother, what is your belief about the authenticity, or origin, of the Book of Mormon?

Answer. My belief is that the Book of Mormon is of divine authenticity – I have not the slightest doubt of it. I am satisfied that no man could have dictated the writing of the manuscripts unless he was inspired; for, when acting as his scribe, your father would dictate to me hour after hour; and when returning after meals, or after interruptions, he could at once begin where he had left off, without either seeing the manuscript or having any portion of it read to him. This was a usual thing for him to do. It would have been improbable that a learned man could do this; and, for one so ignorant and unlearned as he was, it was simply impossible.

In addition to Emma’s testimony in word, her devotion to Joseph and the restored gospel serve as a powerful witness of her faith.