What does 2 Chronicles 13:22 mean?

The rest of Abijah's story—everything he said and did—is written down in the records kept by the prophet Iddo. 2 Chronicles 13:22 - Modern Text Bible

(This verse wraps up Abijah's reign, pointing out that more details about his life can be found in another historical source, showing that the chronicler is summarizing and not giving every detail.)