Jehoiarib, thought to denote Yahweh pleads or Yahweh contends or whom Jehovah defends, was a priest in Jerusalem. (1Chrn. 9:10) Little information is provided on him.
Regarding 1Chrn. 9:10. Keil and Delitzsch understand that,
- The three names Jedaiah, Jehoiarib, and Jachin (1Chrn. 9:10) denote three classes of priests (cf. 1Chrn. 24:7; 24:17), who accordingly dwelt in Jerusalem.
The name occurs again in 1Chrn. 24:7 as the name of the family Joiarib among the 24 courses of priests (Neh_1:2, Neh_1:6), the head of which was Matrenai in Neh. 12:19. See also Neh. 11:10.
His “course” went up from Babylon after the Exile (Ezr_2:36-39; Neh_7:39-42).
- Keil & Delitzsch Commentary on the Old Testament
- International Standard Bible Encyclopedia
- Easton's Illustrated Bible Dictionary, 1897.