Final answer:
The message Huck finds inside the Bible is an example of foreshadowing in Mark Twain's The Adventures of Huckleberry Finn.
Step-by-step explanation:
The message Huck finds inside the Bible that Sophia Grangerford has asked him to retrieve from the church is an example of foreshadowing in Mark Twain's The Adventures of Huckleberry Finn. Foreshadowing is when the author gives hints about plot developments to come before they happen. In this case, the message foreshadows a future event or revelation that will be important to the story.