In this book, distinguished professor and author Benedict Viviano, OP, presents a valuable survey of scholarly research on Q, from the German Logien-Quelle, “the sayings source.” Q or “source” is thought to be one of two written sources behind the Gospel of Matthew and the Gospel of Luke and is defined as the "common" material found in Matthew and Luke but not in their other written source, the Gospel of Mark. In this clear and informational work, the author: • Surveys the scholarship on Q from its beginnings up to the most recent studies. • Describes in a clear and simple way the nature and contents of Q. • Presents in a judicious way the different views on Q: those who support it and those who oppose it. • Provides examples that will help the reader assess the importance of Q and its consequences, for a better understanding of the life and teaching of Jesus. †