Q source
Most scholars believe the gospel was composed between AD 80 and 90, with a range of possibility between AD 70 to 110; a pre-70 date remains a minority view. The work does not identify its author, and the early tradition attributing it to the apostle Matthew is rejected by modern scholars. He was probably a male Jew, standing on the margin between traditional and non-traditional Jewish values, and familiar with technical legal aspects of scripture being debated in his time. Writing in a polished Semitic "synagogue Greek", he drew on the Gospel of Mark as a source, plus the hypothetical collection of sayings known as the Q source (material shared with Luke but not with Mark) and material unique to his own community, called the M source or "Special Matthew".