Q Source
by Mark Goodacre

Q. How many scholars believe that Q existed as a source for Matthew and Luke?

A. Many scholars accept the existence of Q as a source for Matthew and Luke. It is a fundamental aspect of the two-source theory, according to which Matthew and Luke independently used both Mark and the hypothetical source, Q. The two-source theory is given as the primary solution to the synoptic problem in most of the introductory textbooks, and it is assumed in many of the commentaries, monographs, and articles written about the Gospels.