Mokattam is widely known in the Coptic Church, as it is believed to have moved up and down when the Coptic Pope Abraham of Alexandria performed a mass near it in order to prove to the Caliph that the Gospel is true, when it says that if one has faith like a grain of mustard one can move a mountain. The name Broken off Mountain may be related to the fact that in the story the mountain breaks off from the underlying rock and rises up, before coming back down.