What is the main idea in this paragraph? what type of organization is used in a paragraph that lists similarities between two objects?

What type of figurative language is used in this passage from "letter from birmingham jail"? just as the prophets of the eighth century b.c. left their villages and carried their "thus saith the lord" far beyond the boundaries of their hometowns, and just as the apostle paul left his village of tarsus and carried the gospel of jesus christ to the far corners of the greco roman world, so am i compelled to carry the gospel of freedom beyond my own hometown. allusion symbolism imagery metaphor

In twelve years a slave, northup realizes he cannot trust anyone after his kidnapping except hamilton and brown god the physician the women who gave him drink

What effects does roosevelt hope to have on americans with his apeal to emotion