Abstract: In this research, blasphemy and apostasy are described, and their development in history are reported. It will begin with history of the concepts as treated by ayat of Qur'an or traditions of the Prophet (PBUH) concerning punishment of blasphemous and apostate, followed by history of the concepts in the west. Especially in England. A conclusion will complete the subject. The Author is a well known Arab American scholar, poet, and author of more than 200 books, who initiated the project as well as the Arab American Encyclopedia. Dr. Yahya resides in Michigan-USA, and has four children and ten grandchildren.