King James Bible Dictionary

The descendants of Rechab through Jonadab or Jehonadab. They belonged to the Kenites, who accompanied the children of Israel into Palestine, and dwelt among them. Moses married a Kenite wife (Judges 1:16), and Jael was the wife of "Heber the Kenite" (4:17). Saul also showed kindness to the Kenites (1 Samuel 15:6). The main body of the Kenites dwelt in cities, and adopted settled habits of life (30:29); but Jehonadab forbade his descendants to drink wine or to live in cities. They were commanded to lead always a nomad life. They adhered to the law laid down by Jonadab, and were noted for their fidelity to the old-established custom of their family in the days of Jeremiah (35); and this feature of their character is referred to by the prophet for the purpose of giving point to his own exhortation. They are referred to in Nehemiah 3:14 and 1 Chronicles 2:55. Dr. Wolff (1839) found in Arabia, near Mecca, a tribe claiming to be descendants of Jehonadab; and recently a Bedouin tribe has been found near the Dead Sea who also profess to be descendants of the same Kenite chief.

A family of Kenites descended from Rechab, through Jonadab
1 Chronicles 2:55; Jeremiah 35:6

Enjoined by Jonadab to drink no wine
Jeremiah 35:6

Adhere to the injunction of abstinence; perpetuation of the family promised as a reward
Jeremiah 24:35
Abstinence, Total; Nazarite

[RECHAB]