Egypt was a Christian country before the 7th century , and after Islam arrived , the country was gradually Islamised into a majority-Muslim country . It is not known when Muslims reached a majority variously estimated from c. 1000 CE to as late as the 14th century . Egypt emerged as a centre of politics and culture in the Muslim world . Under Anwar Sadat , Islam became the official state religion and Sharia the main source of law . It is estimated that 15 million Egyptians follow Native Sufi orders , with the Sufi leadership asserting that the numbers are much greater as many Egyptian Sufis are not officially registered with a Sufi order . At least 305 people were killed during a November 2017 attack on a Sufi mosque in Sinai
November 2017 attack
2017 Sinai mosque attack
Egypt