Jonadab is the name of two men in the Hebrew Bible:
- In 2 Samuel 13:3 Jonadab son of Shimeah is described as a 'very shrewd man' (NIV). He suggests to Amnon the plan he uses to seduce Tamar, and is later implicated in the murder of Amnon by Absalom.
- In the Book of Jeremiah, Jonadab is the name given to Jehonadab.
- Jehovah's Witnesses use the terms Jehonadab and Jonadab to refer to a class of people who survive Armageddon and live forever on earth.
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