Muslim conquest of the Levant
After the Muslim conquest of the Levant in the 630s, the local Christians were Arabized even though large numbers were ethnically Arabs of the Ghassanid clans. Bethlehem's two largest Arab Christian clans trace their ancestry to the Ghassanids, including al-Farahiyyah and an-Najajreh. The former have descended from the Ghassanids who migrated from Yemen and from the Wadi Musa area in present-day Jordan and an-Najajreh descend from Najran. Another Bethlehem clan, al-Anatreh, also trace their ancestry to the Ghassanids.