Text Analysis
Hebrew Texts
Parallel Verses
New American Standard Bible Abigail bore Amasa, and the father of Amasa was Jether the Ishmaelite.
King James BibleAnd Abigail bare Amasa: and the father of Amasa 
was Jether the Ishmeelite.
Holman Christian Standard BibleAmasa's mother was Abigail, and his father was Jether the Ishmaelite. 
Treasury of Scripture Knowledge
Amasa.
2 Samuel 17:25 And Absalom made Amasa captain of the host instead of Joab: which …
2 Samuel 19:13 And say you to Amasa, Are you not of my bone, and of my flesh? God …
2 Samuel 20:4-12 Then said the king to Amasa, Assemble me the men of Judah within …
1 Kings 2:5,32 Moreover you know also what Joab the son of Zeruiah did to me, and …
Jether. Jether is essentially the same with Ithra, the latter only having the addition of an {aleph,} and it is probable, that he was an Ishmaelite by birth but an Israelite by religion.
2 Samuel 17:25 And Absalom made Amasa captain of the host instead of Joab: which …
Ithra an Israelite. 
Ishmeelite., a descendant of Ishmael. 
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