“Then one of the twelve,
Who was called
Went to the chief priests.”
Τότε πορευθεὶς εἷς τῶν δώδεκα, ὁ λεγόμενος Ἰούδας Ἰσκαριώτης, πρὸς τοὺς ἀρχιερεῖς
This is almost word for word in Mark, chapter 14:10, and somewhat similar in Luke, chapter 22:3-5, and in John, chapter 13:2, where Satan played a role. Here in Matthew, there is just the simple statement that the man called Judas Iscariot (ὁ λεγόμενος Ἰούδας Ἰσκαριώτης), one of the beloved 12 leaders or apostles (εἷς τῶν δώδεκα) went to the chief priests (Τότε πορευθεὶς…πρὸς τοὺς ἀρχιερεῖς). 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.