“Then Judas Iscariot,
Who was one of the twelve,
Went to the chief priests
In order to betray Jesus
Καὶ Ἰούδας Ἰσκαριὼθ, ὁ εἷς τῶν δώδεκα, ἀπῆλθεν πρὸς τοὺς ἀρχιερεῖς ἵνα αὐτὸν παραδοῖ αὐτοῖς.
This is almost word for word in Matthew, chapter 26:14, and somewhat similar in Luke, chapter 22:3-4, and in John, chapter 13:2, where Satan played a role. Here in Mark, there is just the simple statement that Judas Iscariot (Καὶ Ἰούδας Ἰσκαριὼθ), one of the beloved 12 leaders or apostles (ὁ εἷς τῶν δώδεκα) went to the chief priests (ἀπῆλθεν πρὸς τοὺς ἀρχιερεῖς). He wanted to betray or turn over Jesus to these high priests (ἵνα αὐτὸν παραδοῖ αὐτοῖς). Apparently, according to John, chapter 12:6, Judas had been in charge of their common money, but he was stealing from this fund. Thus, there may have been financial reasons or greed pushing Judas to betray Jesus. John seems to be much more vehemently opposed to Judas.