Sin and Forgiveness in Christianity and Islam

<p>In this book we will try to answer questions like; What is the origin of sins according to Christians? And what is the gravest sin for them? </p><p>How can sins be forgiven? What are the negative results that emanate from their misleading concepts of sin and forgiveness? Is Christianity the only way to salvation? </p><p> </p><p>What is Islam's notion of the origin of sins? </p><p>And what is the gravest sin according to Islam? </p><p>What are the various ways that lead to forgiveness?  </p>