Metro here tries to preserve the claim that he converted to Christianity and did not return to Islam, stating, absolutely without evidence, that Arab Christians also scream “Allahu akbar,” but that is arrant nonsense designed to whitewash another jihad attack. I was in daily contact with Christian Arabs for nearly 20 years and never once heard one say “Allahu akbar” except when mocking jihadis. In fact, they recoiled at the phrase, having been victims of jihadis themselves.
And even if Metro is telling the truth and there are some Christians somewhere who run around screaming “Allahu akbar,” there is no record, none, of any Christian anywhere committing a terror attack in the name of Christianity while screaming “Allahu akbar.” There is abundant record, however, of Muslims committing jihad terror attacks while screaming “Allahu akbar.”
Maybe Saadallah converted to Christianity and then returned to Islam, turning to jihad to make up for his sin of apostasy. Another possibility: in January 2016, the Islamic State (ISIS) issued a manual entitled “Safety and Security Guidelines for Lone Wolf Mujahideen.” It told jihadis in the West to pretend to be Christians, and stated: “It is permissible for you to wear a necklace showing a Christian cross. As you know, Christians – or even atheist Westerners with Christian background – wear crosses on their necklaces.” According to a hadith, Muhammad said, “War is deceit.” (Bukhari 4.52.268). MORE HERE