Answer:
Henry seeks to engage his audience by showing his respect for them. He recognizes and compliments the patriotism and abilities of the other members of the Convention in his first sentence (note that Henry continues to address the body as the House). He prepares his audience by expresses the hope that they will show him the same respect when he states in sentence 2, “I hope it will not be thought disrespectful…” Even though he will be speaking contrary to what has been previously presented, he reminds his audience that they are all colleagues by referring to the entire group, as in sentence 6, “we can hope to arrive at the truth.”
The purpose of the debate, of which this speech is a part, is to “arrive at truth” and fulfill the “great responsibility which we hold to God and our country” (sentence 6). He is appealing to the ethical integrity of his audience by articulating their earthly and heavenly responsibilities.
The first two paragraphs form the introduction (Exordium). The Exordium attempts to engage the audience, to prepare them for the message to come, and to explain the purpose (thesis) of the speech.
The third paragraph provides the statement of fact (Narratio) and argument (Confirmatio). The Narratio contextualizes the argument, presenting any background information necessary, while the Confirmatio explains the evidence that supports the thesis.
The fourth paragraph presents and refutes counter arguments (Refutatio).
The final paragraph forms the conclusion (Peroratio). The Peroratio serves several purposes: to restate an argument, to amplify reasoning, to inspire an audience, and to rouse emotional responses.