A Palestinian Christian attends the Orthodox Christmas mass at the Saint Porphyrius Church in Gaza City, Jan. 7, 2019. Orthodox Christians celebrate Christmas on Jan. 7 according to the Julian calendar. (Photos: Xinhua)

Greek Orthodox Archbishop Alexios leads the Orthodox Christmas mass at the Saint Porphyrius Church in Gaza City, Jan. 7, 2019. Orthodox Christians celebrate Christmas on Jan. 7 according to the Julian calendar.

Palestinian Christians attend the Orthodox Christmas mass at the Saint Porphyrius Church in Gaza City, Jan. 7, 2019. Orthodox Christians celebrate Christmas on Jan. 7 according to the Julian calendar.

Palestinian Christians attend the Orthodox Christmas mass at the Saint Porphyrius church in Gaza City, Jan. 7, 2019. Orthodox Christians celebrate Christmas on Jan. 7 according to the Julian calendar.