Despite being written in Latinized Greek, it is the only Gospel in which Jesus is quoted in Aramaic.
It has been argued that this work's author is referred to as "my son" in First Peter 5:13.  Others believe that this work originally stopped after 16:8 and that its passages on the Resurrection were added later by a different author. The theologian Wilhelm Wrede has written about the fact that in 8:30 and 1:44 of this text, Jesus asks that his ability to perform miracles and his status as the messiah be kept secret. Despite being written in Latinized Greek, it is the only Gospel in which Jesus is quoted in Aramaic. Containing no reference to the nativity, it is probably the only synoptic gospel not partly based upon the lost source Q.  FTP, name this earliest gospel, traditionally found after Matthew and written by a man with a namesake church in Venice.
It has been argued that this work's author is referred to as "my son" in First Peter 5:13.  
The Gospel According to St. Mark