This video looks a little dated, or at least the opening title screen makes it seem that way but the message is a good one, detailing an experience Brigham Young had that led to his conversion.
What is it that convinces man? It is the influence of the Almighty, enlightening his mind, giving instruction to the understanding.
…Anything besides that influence, will fail to convince any person of the truth of the Gospel of salvation …Sermonizing, dividing, and subdividing subjects, and building up a fine superstructure calculated to fascinate the mind, coupled with the choicest eloquence of the world, will produce no good to them.
…The world, with all its wisdom and power, and with all the glory and gilded show of its kings or potentates, sinks into perfect insignificance, compared with the simple, unadorned testimony of the servant of God. (Brigham Young, 1852)