|Easton's Bible Dictionary|
Jehovah defends, a priest at Jerusalem, head of one of the sacerdotal courses (1 Chronicles 9:10; 24:7). His "course" went up from Babylon after the Exile (Ezra 2:36-39; Nehemiah 7:39-42).
Int. Standard Bible Encyclopedia
je-hoi'-a-rib (yehoyaribh, "Yahweh pleads" or "contends"): A priest in Jerusalem (1 Chronicles 9:10); the name occurs again in 1 Chronicles 24:7 as the name of a family among. the 24 courses of priests = the family Joiarib (yoyaribh, same meaning as above, Nehemiah 1:2, 6), the head of which is Matrenai in Nehemiah 12:19. In Nehemiah 11:10 we should probably read "Jedaiah and Joiarib" for "Jedaiah the son of Joiarib" (compare 1 Chronicles 9:10). Jehoiarib = Joarib in 1 Maccabees 2:1.
Jehoiarib (2 Occurrences)
1 Chronicles 9:10 Of the priests: Jedaiah, and Jehoiarib, Jachin, (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
1 Chronicles 24:7 Now the first lot came forth to Jehoiarib, the second to Jedaiah, (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)