'''Gabriel ibn Khalifah al-Kalbi''' was the twin brother of [[Dihyah ibn Khalifah al-Kalbi]] as sons of the Proto-Karaite Mamed [[Khalifah Nehemiah ben Hushiel]]'s [[Idumean]] council of the righteous. He was a [[Proto-Karaite]] who ran a Noahite mission for the Alid [[Messianic Mithreans]] in Persia. His mission was opposed by the Quraysh Proto-Karaites. He was the official Bard for the Idumeanss in Khosrow II's army.
