President Kimball taught extensively the principles of repentance and forgiveness. At age 74, his book The Miracle of Forgiveness was published. Of this writing and of his teaching, Elder Boyd K. Packer recorded, quote, "President Kimball himself is an experienced surgeon of sorts-- not a doctor of medicine, but a doctor of spiritual well-being. Many a moral cancer has been excised. Many a blemish of character has been removed. Many a spiritual illness of one kind or another has been cured through his efforts. Some on the verge of spiritual oblivion have been rescued by him. He has written a book literally years in preparation-- The Miracle of Forgiveness. Many have been protected by the council he has written. Countless others have been inspired to set their lives in order and have experienced that miracle," end quote.