Primitive Luke is not Identical to Marcion

 Primitive Luke is not Identical to Marcion

H. Philip West, JR. in his paper “A Primitive Version of Luke in the Composition of Matthew” (New Test. Stud. 14, pp. 75-95) identifies probable omissions of Marcion with respect to Primitive Luke. Thus, Marcion shouldn't be thought of as being identical to Primitive Luke. 

West also identifies what he thinks are probable additions of Canonical Luke with respect to Primitive Luke. He further outlines material possibly present in Primitive Luke, but absent from both Matthew and Marcion. The probable omissions of Marcion, probable additions of canonical Luke, and material possibly present in Primitive Luke but absent from Matthew and Marcion are denoted in Fig. 3 from his paper below. 

Probable Omissions of Marcion

• Luke 3:3-Luke 4:13
• Luke 11:30-32
• Luke 11:49-51
• Luke 18:31-34
• Luke 19:9b
• Luke 23:35-38

Possible Omissions of Marcion and Matthew

• Luke 13:1-9
• Luke 15:11-32
• Luke 19:41-44
• Luke 21:20-24
• Luke 21:37-38
• Luke 22:35-38

Probable Additions to Canonical Luke

• Luke 1:1-Luke 3:2
• Luke 5:39
• Luke 21:8
• Luke 22:16
• Luke 23:13-16
• Luke 23:39-43, 48
• Luke 24:13-53

Footnote 1: 

“Pericopes which we find in Luke and which we know were included, in some form, in Marcion, are presumed to have been in Primitive Luke. Similarly, pericopes which we now find in Matthew and Luke but which were absent from Marcion were included in Primitive Luke but omitted from Marcion's Gospel. Matthew and Marcion might well omit pericopes for different reasons. Pericopes absent from both Marcion and Matthew are to be suspected as additions to Primitive Luke, but some of these may have been omitted by Matthew and Marcion for different reasons. These generalizations are not to govern our examination of the material, and the status of each pericope must be determined individually.”

Reference: H.P. West Jr., “A Primitive Version of Luke in the Composition of Matthew,” New Test. Stud. 14,