What simile does Benedick use to describe an aspect of Beatrice?

Does anyone know the answer to the question?

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 poem daffodils-how do we know that the yellow daffodils has a long lasting effect on the speaker.