my great-great-grandfather, john person, owned the land. >> mark person is maurice's cousin. > yeah. they did own slaves. but a lot of the neighbors didn't like john person 'cause he was too kind to the slaves sometimes. but he said, "hey, it's my land. everybody's welcome." and nat turner approached him and said, "i'd like to be baptized here." >> after the baptism, nat becomes inspired by the story of moses leading the israelites to freedom and by the fiery visions in the book of revelations. >> and nat became, in his own words, a free man to god at that time. he felt that his purpose was to be a redeemer. and he felt that slavery was a moral wrong, and so, therefore, he was entitled to seek revenge for that. >> he slowly came to the idea that he was chosen by god to engage in a rebellion against slavery. the end of the world being near, he would kill everybody. >> historian kenneth greenberg tells me a series of visions and voices that turner thinks are from god only reinforce his beliefs. >> he sees blood on the corn. he sees christ's arms stretched out across the heavens.