In the book ``Messenger of Mercy and Non-Muslims``, the Western world has been suffering from many misunderstandings about the Holy Prophet and Islam for centuries. However, after the revival of sciences, some misunderstandings gradually disappeared or were suppressed. The book under review, which proves with historical arguments and positive references that the Messenger of Allah (peace and blessings of Allah be upon him) is actually the Messenger of Mercy and the religion he brought was tolerance and tolerance. It is the religion of moderation