Okay kiddo, let me explain the four-document hypothesis to you in a way you'll understand.
So imagine you want to write a story about a really cool adventure, but there are a lot of different characters and things happening. You might need to gather information from different sources to create your story.
That's kind of what happened with the Bible. The four-document hypothesis suggests that the first four books of the New Testament - Matthew, Mark, Luke, and John - were each written based on different sources.
Matthew and Luke used a document called the "Q source" as well as other sources, while Mark used a different source, and John used even more sources. It's like they each had their own pile of information to work with.
So the four-document hypothesis says that the authors of these books didn't just make up their stories, but rather gathered information from different sources to create their writings. It's kind of like how you might ask your friends for help with a story, or read different books to get ideas.
Does that make sense, kiddo?