Lehi saw a man dressed in a white robe, Christ or his representative, who invited Lehi to follow him. The prophet saw himself in a dark and dreary waste; after many hours in darkness, he prayed. When we are in darkness resulting from our pride or that of others, sin, or contention, we, too, must pray. That is what Joseph Smith did: he was in doctrinal darkness and then in the darkness of Satan’s personal attack, but after he prayed, the greatest Light came.