The main mosque in Beit Ummar houses the tomb of Nabi Matta. Matta meaning Matthew or Amittai, father of Jonah.
Chronicler Ali of Herat documented in 1173 CE, that while Halhul was a part of the Kingdom of Jerusalem of the Crusaders, it was a village in which the tomb of Yunis ibn Matta (Jonah son of Amittai) was located.