Ether 4:12

"And whatsoever thing persuadeth men to do good is of me; for good cometh of none save it be of me. I am the same that leadeth men to all good; he that will not believe my words will not believe me - that I am; and he that will not believe me will not believe the Father who sent me, For behold, I am the Father, I am the light, and the life, and the truth of the world."

All good things come of Christ. Those who don't believe Him will not believe anything of Him. Those who do not believe His words do not really believe Him.  They do not know that He is the truth, light, and life of the world, and that He is the Father.