Amasa’s mother was Abigail, and his father was Jether the Ishmaelite.

The sons of Jada, brother of Shammai: Jether and Jonathan. Jether died without children.

Ezrah’s sons: Jether, Mered, Epher, and Jalon. Mered’s wife Bithiah gave birth to Miriam, Shammai, and Ishbah the father of Eshtemoa.

Jether’s sons: Jephunneh, Pispa, and Ara.