We should also look at some of the Holy Sonnets to see his clever and sophisticated use of language to convey some very important themes. I especially admire his point in "Death be not proud." Here he is using apostrophe to directly address the entity of death, and he uses a variety of other literary techniques in creative ways to "put death in its place" so to speak.
I also admire "Batter my heart three person God." Here he uses wonderful balance in his metaphors for God as Father, Son and Spirit, as well as the associations made to those three persons: "knock, breathe, [and] shine" in order to "break, blow, [and] burn" him into being a better person than he was before. Simply masterful!