ITHRA

ith'-ra (yithra', "abundance"): The father of Amasa, commanding general in the rebel army of Absalom. It seems that his mother was Abigail, a sister or half-sister of King David (1 Chronicles 2:17). She is called the sister of Zeruiah, Joab's mother (2 Samuel 17:25). In this same passage Ithra is called an "Israelite," but in 1 Chronicles 2:17; 1 Kings 2:5,32, we read: "Jether the Ishmaelite."

From the International Standard Bible Encyclopedia
Edited by James Orr, published in 1939 by Wm. B. Eerdmans Publishing Co.