David Whitmer quotes
In June, 1829, the Lord called Oliver Cowdery, Martin Harris, and myself as the three witnesses, to behold the vision of the Angel, as recorded in the fore part of the Book of Mormon, and to bear testimony to the world that the Book of Mormon is true. I was not called to bear testimony to the mission of Brother Joseph Smith any farther than his work of translating the Book of Mormon, as you can see by reading the testimony of us three witnesses.
David Whitmer
It is recorded in the American Cyclopaedia and the Encyclopaedia Britannica, that I, David Whitmer, have denied my testimony as one of the three witnesses to the divinity of the Book of Mormon; and that the other two witnesses, Oliver Cowdery and Martin Harris, denied their testimony to that Book. I will say once more to all mankind, that I have never at any time denied that testimony or any part thereof. I also testify to the world, that neither Oliver Cowdery or Martin Harris ever at an time denied their testimony. They both died reaffirming the truth of the divine authenticity of the Book of Mormon. I was present at the death bed of Oliver Cowdery, and his last words were, "Brother David, be true to your testimony to the Book of Mormon."
David Whitmer
Joseph Smith drifting into errors after translating the Book of Mormon, is a stumbling-block to many, but only those of very weak faith would stumble on this account. Greater abominations are recorded of David in the Bible, than is recorded to-day of Joseph Smith; but do you reject the Psalms on this account? Do you reject the Proverbs because Solomon was a polygamist? Stop and think, you who are hasty to condemn. If you desire to know whether or not the Book of Mormon is true, read the book and investigate it, for Christ has promised that he who seeks in the right way shall find the truth of all things. We are commanded to "Prove all things; hold fast that which is good."
David Whitmer