epistle (noun)

1. During the American Civil War, soldiers often wrote epistles to their loved ones back home, detailing the hardships they faced on the battlefield.

2. In Jane Austen's novel, Pride and Prejudice, the character Mr. Darcy writes an epistle to the protagonist, Elizabeth Bennet, expressing his love and regrets.

3. The Apostle Paul wrote numerous epistles to the early Christian communities, offering guidance, teaching, and encouragement in their faith.

4. In the chilling horror story, a haunted old mansion is discovered to contain a hidden room covered in blood-red epistles, each containing a cryptic message of doom.