Under the hypothesis of the priority of Mark, it appears that 78% of the content of the Gospel of Matthew is derived from that of Mark, while 22% of the events presented by Matthew are unique additions.
Moreover, 90% of the content of the Gospel of Mark is taken up by Matthew. It is also noteworthy that all the information contained in the Gospel of Mark is found in the Gospels of Matthew and Luke.
This means that, among the Synoptic Gospels, Mark contributes no new event. This observation has led some exegetes to consider the hypothesis that the Gospel of Mark was the first to be written.
The ‘priority of Mark’ is a well-established hypothesis among Gospel scholars in biblical studies. Proposed at the beginning of the 19th century, this theory suggests that the Gospel according to Mark was the first of the four Gospels of the New Testament to be written. This idea challenges the traditionally accepted chronological order, which places Matthew first, followed by Mark, Luke and John. We will briefly examine five key arguments that support this theory, while adding our own observations on each point.
Simplicity and brevity of Mark: Mark's account is the shortest and seems less elaborate than those of Matthew and Luke. This simplicity suggests that Mark could be the original source.
Our observation: This brevity could result from a simplification of Matthew's text, intended for a non-Jewish audience.
Narrative structure: Matthew and Luke largely follow the order of events in Mark, while adding their own content.
Our observation: It is equally possible that Mark and Luke adapted the structure of Matthew, modifying the content for their own purposes.
Details and language: Mark's choice of words and his raw details are often improved in Matthew and Luke.
Our observation: The scholarly linguistic skills of Matthew and Luke are evident in their accounts, whereas Mark's account reflects a simpler approach, suited to an audience less familiar with Jewish customs.
Two-source theory: It suggests that Matthew and Luke used Mark and a hypothetical source ‘Q’ for their writing.
Our observation: We envisage instead a common list of pericopes drawn up by the apostles, with Matthew as the principal writer. Peter would then have simplified Matthew's text with the help of Mark in order to adapt it to a non-Jewish audience.
Literary and textual analyses: Comparative analyses of the texts show that Matthew and Luke often reproduce large portions of Mark word for word, which is less frequent in the other direction.
Our observation: The text of Luke was written well after Matthew and Mark, and should be analyzed separately. The close link between Matthew and Mark suggests that Mark is a simplified version of Matthew.
In conclusion, although the priority of Mark is widely debated, it is not universally accepted. Our analysis suggests that the priority of Matthew is also a viable option, which seems to us more in keeping with the pragmatism and the dynamics of the group of apostles.