Gospel of Marcion this gospel to Luke the Evangelist as a fabrication, so he began what he saw as a restoration of the original gospel as given to Paul. Von Harnack wrote that: While it remains a minority hypothesis, Biblical scholars as varied as Johann Salomo Semler, Johann Gottfried Eichhorn, Albrecht Ritschl, John Knox (not to be confused), and Joseph B Tyson have posited that the Gospel of Luke was a later redaction of the Gospel of Marcion, rather than the other way around. In 2008, Matthias Klinghardt proposed a new solution to the synoptic problem involving the Gospel of Marcion, in which
New Testament Writings attributed to the apostles circulated among the earliest Christian communities and the Pauline epistles were circulating, perhaps in collected forms, by the end of the 1st century AD. One of the earliest attempts at solidifying a canon was made by Marcion, "circa" 140 AD, who accepted only a modified version of Luke (the Gospel of Marcion) and ten of Paul's letters, while rejecting the Old Testament entirely. His canon was increasingly rejected by other groups of Christians, notably the proto-orthodox Christians, as was his theology, Marcionism. Adolf Harnack in "Origin of the New Testament" (1914) observed that the church