Analysis of information sources in references of the Wikipedia article "Historicity of Jesus" in English language version.
The Gospels cannot be equated with ... biographies. ... [Their] primary purpose was not to present a detailed historical picture of the life of Jesus. And the non-Christian materials ... provide us with no essential new knowledge beyond the accounts of the Gospels. ... [Thus] the situation in regard to sources is highly unsatisfactory; legendary and historical accounts are hopelessly intertwined. The historian must recognize that the materials available to us do not enable us to reconstruct Jesus as he really was. [They have] only the Jesus the early disciples saw, the Christ who has survived in the beliefs of the Christian community.
The Synoptic Gospels, then, are the primary sources for knowledge of the historical Jesus
The Synoptic Gospels, then, are the primary sources for knowledge of the historical Jesus