What literacy term describes one form of 14 line poem

What do the details in this excerpt readers to infer about the barbarians?

What effect is achieved by the use of the phrase "as the devil would have it" in the second sentence?

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