2 Maccabees 10:15–17

¹⁵Besides this, the Idumeans, who had control of important strongholds, were harassing the Jews; they received those who were banished from Jerusalem and endeavored to keep up the war.^{* 16}But Maccabeus and his forces, after making solemn supplication and imploring God to fight on their side, rushed to the strongholds of the Idumeans. ¹⁷Attacking them vigorously, they gained possession of the places and drove back all who fought upon the wall and slaughtered those whom they encountered, killing no fewer than twenty thousand.