Throughout time man has deviated. The people who were alive during the time of the prophets before the Prophet Muhammad (saw) deviated just as those who are alive now deviate. So, as a result deviation is nothing new. However, we may extract benefit from the mistakes of the past. This presentation is meant to inform us of the various types of deviation which have occurred, so their mistakes will not be repeated. This lecture is also a source of historical reference material. Abu Ameenah Bilal Philips was born in Jamaica, but grew up in Canada, where he accepted Islam in 1972. He completed a diploma in Arabic, and a B.A. from the College of Islamic Disciplines (Usool Ad-Deen) at the Islamic Univeristy of Madeenah in 1979. At the University of Riyadh, College of Education, he completed a M.A. in Islamic Theology in 1985, and in the department of Islamic Studies at the University of Wales, he completed a Ph.D. in Islamic Theology in 1994. Since 1994 he has founded and directed the Islamic Information Center in Dubai, United Arab Emirates (which is now known as Discover Islam) and the Foreign Literature Department of Dar Al Fatah Islamic Press in Sharjah, UAE. Presently, he is a lecturer of Arabic and Islamic Studies at the American University in Dubai and Ajman University in Ajman, UAE.