No one showed more integrity in life than the Savior. The Savior was true to His Father and His calling. Our Heavenly Father wants us to be honest and true throughout our lives.
Elder Dallin H. Oaks, during the October 1986 Saturday afternoon session of general conference, taught this lesson through a story of business owners who weren't willing to sacrifice their integrity to make money.
Other stories about honesty are shared in this episode of Stories from General Conference by President Howard W. Hunter, Elder Joseph B. Wirthlin, and Elder David B. Haight.