Mark provides the parallel to *Ev 6,18-22 in a somewhat later place in Mk 8,27-31, and also reproduces it largely verbatim, only sharpening it here at the end when he speaks of Jesus being killed by the elders, chief priests and scribes in addition to the suffering.
These three groups of authorities are also found in Mark's next encounter with John the Baptist (Mk 11:27-33). Above all, Mark had already introduced the chief priests and scribes shortly before in the scene of the cleansing of the temple (Mk 11:18), to which the further pericope with John the Baptist refers. For while the parallel passage in *Ev 20:1-8 discussed above dealt with the subject of Jesus' teaching authority, Mark relates the story here to the preceding cleansing of the temple with the passage he inserted about the withered fig tree and therefore does not emphasise the confrontation between Jesus and the Pharisees at this point, as in *Ev, but to "chief priests, scribes and elders". We will discuss this passage in more detail below in Matthew and again in Luke.
Another important omission of Mark should be noted. As we saw above in the comments on the *Ev, the scene with the spreading of the news about Jesus "as far as John the Baptist" (*Ev 7:17-22) was a central passage, because in it Markion explicitly documented that John had taken "offence" at Jesus, but conversely Jesus answered the disciples of John in the same passage: "Blessed are you if you take no offence at me!" The antithesis between the Baptist and Jesus could not be formulated more clearly. Understandably, the whole passage is missing in Mark, which is no surprise after all that has been explained before, since Mark has portrayed John as a mediator between Jesus and the Jewish prophets, not as a border between Jewish prophecy and Jesus, as he found in his model *Ev.
These three groups of authorities are also found in Mark's next encounter with John the Baptist (Mk 11:27-33). Above all, Mark had already introduced the chief priests and scribes shortly before in the scene of the cleansing of the temple (Mk 11:18), to which the further pericope with John the Baptist refers. For while the parallel passage in *Ev 20:1-8 discussed above dealt with the subject of Jesus' teaching authority, Mark relates the story here to the preceding cleansing of the temple with the passage he inserted about the withered fig tree and therefore does not emphasise the confrontation between Jesus and the Pharisees at this point, as in *Ev, but to "chief priests, scribes and elders". We will discuss this passage in more detail below in Matthew and again in Luke.
Another important omission of Mark should be noted. As we saw above in the comments on the *Ev, the scene with the spreading of the news about Jesus "as far as John the Baptist" (*Ev 7:17-22) was a central passage, because in it Markion explicitly documented that John had taken "offence" at Jesus, but conversely Jesus answered the disciples of John in the same passage: "Blessed are you if you take no offence at me!" The antithesis between the Baptist and Jesus could not be formulated more clearly. Understandably, the whole passage is missing in Mark, which is no surprise after all that has been explained before, since Mark has portrayed John as a mediator between Jesus and the Jewish prophets, not as a border between Jewish prophecy and Jesus, as he found in his model *Ev.
For Mt, like Mk, has also inserted the scene of the cleansing of the temple and the image comparison with the withered fig tree. Thus the question of authority does not refer, as in *Ev, to the teaching of Jesus mentioned in *Ev 20,1 in contrast to that of the Phaisees, but to his cleansing of the temple, criticised by the temple authorities. As already explained in *Ev, *Ev shows more clearly than Mt and Mk the criticism of Jesus by the Pharisees (cf. also *Ev 19,39 par.).
Just throwing these in here, what exactly are you looking for?