Jonadab in the Bible

1. Nephew of David

His complicity with Amnon in his rape of Tamar

2 Samuel 13:3-5 But Amnon had a friend, whose name was Jonadab, the son of Shimeah David's brother: and Jonadab was a very subtil man. 4 And he said unto him, Why art thou, being the king's son, lean from day to day? wilt thou not tell me? And Amnon said unto him, I love Tamar, my brother Absalom's sister. 5 And Jonadab said unto him, Lay thee down on thy bed, and make thyself sick: and when thy father cometh to see thee, say unto him, I pray thee, let my sister Tamar come, and give me meat, and dress the meat in my sight, that I may see it, and eat it at her hand.

⇒Bible Encyclopedia for JONADAB.

Comforts David upon the death of Amnon

2 Samuel 13:32-35 And Jonadab, the son of Shimeah David's brother, answered and said, Let not my lord suppose that they have slain all the young men the king's sons; for Amnon only is dead: for by the appointment of Absalom this hath been determined from the day that he forced his sister Tamar. 33 Now therefore let not my lord the king take the thing to his heart, to think that all the king's sons are dead: for Amnon only is dead. 34 But Absalom fled. And the young man that kept the watch lifted up his eyes, and looked, and, behold, there came much people by the way of the hill side behind him. 35 And Jonadab said unto the king, Behold, the king's sons come: as thy servant said, so it is.

2. Also called JEHONADAB

A Rechabite and companion of Jehu

2 Kings 10:15-23 And when he was departed thence, he lighted on Jehonadab the son of Rechab coming to meet him: and he saluted him, and said to him, Is thine heart right, as my heart is with thy heart? And Jehonadab answered, It is. If it be, give me thine hand. And he gave him his hand; and he took him up to him into the chariot. 16 And he said, Come with me, and see my zeal for the LORD. So they made him ride in his chariot. 17 And when he came to Samaria, he slew all that remained unto Ahab in Samaria, till he had destroyed him, according to the saying of the LORD, which he spake to Elijah. 18 And Jehu gathered all the people together, and said unto them, Ahab served Baal a little; but Jehu shall serve him much. ...

His sons refuse to drink wine in obedience to his command

Jeremiah 35:5-10 And I set before the sons of the house of the Rechabites pots full of wine, and cups, and I said unto them, Drink ye wine. 6 But they said, We will drink no wine: for Jonadab the son of Rechab our father commanded us, saying, Ye shall drink no wine, neither ye, nor your sons for ever: 7 Neither shall ye build house, nor sow seed, nor plant vineyard, nor have any: but all your days ye shall dwell in tents; that ye may live many days in the land where ye be strangers. 8 Thus have we obeyed the voice of Jonadab the son of Rechab our father in all that he hath charged us, to drink no wine all our days, we, our wives, our sons, nor our daughters; ...
Jeremiah 35:16-19 Because the sons of Jonadab the son of Rechab have performed the commandment of their father, which he commanded them; but this people hath not hearkened unto me: 17 Therefore thus saith the LORD God of hosts, the God of Israel; Behold, I will bring upon Judah and upon all the inhabitants of Jerusalem all the evil that I have pronounced against them: because I have spoken unto them, but they have not heard; and I have called unto them, but they have not answered. 18 And Jeremiah said unto the house of the Rechabites, Thus saith the LORD of hosts, the God of Israel; Because ye have obeyed the commandment of Jonadab your father, and kept all his precepts, and done according unto all that he hath commanded you: 19 Therefore thus saith the LORD of hosts, the God of Israel; Jonadab the son of Rechab shall not want a man to stand before me for ever.

See RECHABITES