“Jehonadab” means whom Jehovah impels

Jehonadab: and Jon'adab, the son of Rechab, founder of the Rechabites, an Arab chief. When Jehu was advancing, after the slaughter of Betheked, on the city of Samaria, he was suddenly met by Jehonadab, who joined with him in "slaying all that remained unto Ahab." (2 Kings 10:15-17)