Jonadab

Jonadab is a character in the Hebrew Bible, appearing in 2 Samuel 13. He is described in verse 3 as the son of Shimeah, who was the brother of David, making Jonadab a cousin to Amnon as well as his friend. He is called "very wise" (ḥākām mĕ'ōd), usually translated as "very shrewd" (NIV) or "very crafty" (ESV).