What is a benefit of paraphrasing material from one of your sources

You can focus on the main idea. and not the extra facts of the story.

A benefit of paraphrasing material from one of the sources would be that you can convey the message in a much simpler way than what is in your source. Also, you can easily convey what you had understood from the text you've read. Another would be that you avoid issues of plagiarism.