Mark, written around 70 AD, provided the narrative outline for Luke, but Mark contains comparatively little of Jesus' teachings, and for these Luke likely turned to a hypothesized collection of sayings called Q source, which would have consisted mostly, although not exclusively, of "sayings". Mark and Q account for about 64% of Luke; the remaining material, known as the L source, is of unknown origin and date. Most Q and L-source material is grouped in two clusters, Luke 6:17–8:3 and 9:51–18:14, and L-source material forms the first two sections of the gospel (the preface and infancy and childhood narratives).
Mark written around 70 AD provided the narrative outline for Luke but Mark contains comparatively little of Jesus' teachings and for these Luke likely turned to a hypothesized collection of sayings called Q source which would have consisted mostly although not exclusively of "sayings" Mark and Q account for about 64% of Luke; the remaining material known as the L source is of unknown origin and date Most Q and L-source material is grouped in two clusters Luke 617–83 and 951–1814 and L-source material forms the first two sections of the gospel (the preface and infancy and childhood narratives)