Final answer:
Henry begins his speech by acknowledging his ignorance and the impact of slavery on intellect and heart. He then narrates his experiences as a slave, expressing profound thoughts and reflections. The audience is deeply moved and promises to protect him from being returned to slavery.
Step-by-step explanation:
In the beginning of his speech, Henry addresses the Convention by apologizing for his ignorance and acknowledging the effects of slavery on the human intellect and heart. He then proceeds to narrate his own experiences as a slave, expressing noble thoughts and reflective insights. Henry's address captivates the audience, leading Frederick Douglass to compare it to Patrick Henry's famous speeches advocating for liberty. The speech evokes a powerful response from the audience, with unanimous support and determination to protect Douglass from being returned to slavery.