In my last blog I gave evidence for the existence of Q, a source shared by Matthew and Luke. The question now is: What is Q?
Unfortunately, the answer to this question is unknowable. Q could be individual oral traditions, a single oral tradition, a literary source, or a combination of these. It is difficult to say anything about Q with certainty. Really, the only thing we can say with certainty about Q is that it exists.
Some have suggested that Q is a literary source. However, Q does not seem to show a similarity of order as the other written sources do. A lack of ability to show this similarity is evidence that Q was not only a literary source. Some believe that it was a combination of a literary source and oral tradition. But we will never know for certain.