Sin: What Is It Exactly By: Vincent Liddell is meant to glorify God and to serve, to enlighten its readers and provide personal testimony, and serve as a reference book. The topic of the book affects all people, cutting against standard biblical interpretation of modern Christianity. Readers can take away practical information from the words of the book. About the Author Vincent Liddell grew up in Haverstraw, New York, and is a licensed professional engineer with degrees in Electrical Engineering, Engineering Science, Mathematics and Electrical Technology. He has worked as a corrosion engineer, performance engineer, senior electrical engineer, powerplant superintendent, and director of operations and maintenance. In the late 1960s and the early 1970s he played semi-pro baseball in the New York Metropolitan league. Vincent wrote this book for the Glory of God and to help those who are "going through." This book can be used as a reference book, a teaching book, and as a book of testimony of what the Messiah has done for him.