They destroy crosses because according to the Qur’an, Jesus was not crucified (4:157). The cross is considered offensive, because Allah would not allow one of his prophets to suffer defeat.
“ISIS Destroys Assyrian Churches, Hostages Still Being Held,” AINA, March 16, 2015:
ISIS members destroying the St. George Catholic Monastery in Mosul, Iraq (photo: ISIS twitter).
(AINA) — ISIS has posted pictures, on its twitter accounts, of its members destroying the St. George Monastery in Mosul. The pictures show ISIS members using sledgehammers to smash crosses and icons, and removing the cross from the dome and replacing it with the black ISIS flag.
ISIS captured Mosul on June 10, 2014 and immediately destroyed or occupied all 45 Assyrian churches and other religious institutions in the city.
ISIS also destroyed Assyrian archaeological sites, including the walls of Nineveh and the cities of Nimrud and Khorsabad.
In Syria ISIS attacked 35 Assyrian villages in the Hasaka region, capturing at least 300 Assyrians and destroying at least 5 churches, including the church in Tel Hurmiz, one of the oldest churches in Syria, the Mar Bisho church in Tel Shamiran, the church in Qabr Shamiy and the church in Tel Baloua.
After two days of heavy clashes Assyrian and Kurdish forces regained the Assyrian villages of Tel Mighas and Tel Misas. The Church of Saint Sargis in Tel Tamar was been destroyed by ISIS, who burned the bibles and broke its cross. This church has been liberated and is now under the control of Assyrian and Kurdish fighters.
Hostages still being held
ISIS is still holding 52 Assyrian families, nearly 300 people, who were captured in the initial attacks on February 23. No progress has been made in the negotiations for their release in the last three days.
St. George Catholic Monastery, Mosul Iraq