Joseph Smith not only said that he was going to translate the records, but he also maintained he produced a "correct translation" of the documents:
"The record of Abraham and Joseph, found with the mummies [sic] is beautifully written... I have given a brief history of the manner in which the writings of the fathers, Abraham and Joseph, have been preserved, and how I came in possession of the same - a correct translation of which I shall give in its proper place." (History of the Church, vol. 2, pp. 348, 350-51)
"The remainder of this month, I was continually engaged in translating an alphabet to the Book of Abraham, and arranging a grammar of the Egyptian language as practiced by the ancients." (History of the Church, vol. 2, page 238)
"October 1. -This afternoon I labored on the Egyptian alphabet... during the research, the principles of astronomy as understood by Father Abraham and the ancients unfolded to our understanding, the particulars of which will appear hereafter. (Ibid., page 286)
Tuesday, [Nov.] 24. - ... In the afternoon we translated some of the Egyptian records ....
Thursday, 26. - Spent the day in translating Egyptian characters from the papyrus... (Ibid., page 320)
At the beginning of the handwritten manuscript of the Book of Abraham, Joseph Smith asserted that it was a "Translation of the Book of Abraham written by his own hand upon papyrus and found in the catacombs of Egypt."