Jonadab in Wikipedia
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
Jehovah's Witnesses use the terms Jehonadab and Jonadab to
refer to a class of people who survive Armageddon and live
forever on earth.