Why is the betrayal of Judas significant in Christian theology?

The betrayal of Judas is significant not only as an act of treachery but also as a fulfillment of prophetic scripture concerning the Messiah. In Psalm 41:9, it is foretold that a close companion would betray the Messiah. Christ’s use of the term 'friend' when addressing Judas underscores the tragic nature of half-hearted discipleship, as Judas walked with Christ but was never reconciled to Him. This serves as a warning against the dangers of hypocrisy and emphasizes the reality that not all who associate with Christ are true disciples. The betrayer was a stark representation of the unregenerate heart, which, even in religious contexts, opposes the truth of the gospel.