What does the Bible say about Judas Iscariot's role in the betrayal of Christ?

Judas Iscariot's betrayal of Jesus is a significant event in the New Testament, and it is made clear that this act was not a mere accident or happenstance. Acts 1:16 states that 'this scripture must needs have been fulfilled,' indicating that his role was ordained by God and foretold by the prophets. Scriptures such as Psalm 69 and Psalm 109 are cited as prophetic references describing Judas's betrayal. These passages highlight that his actions fit into God's sovereign plan, demonstrating God's control over the unfolding of salvation history. The acknowledgment that Judas was 'numbered with us' (Acts 1:17) emphasizes that while he was physically part of the circle of Jesus's closest followers, he had no spiritual part in the salvation offered through Christ, leading to a grim end for him.