Peter takes seriously what Jesus had taught the apostles in Luke 24:27, Luke 24:44–49. Drawing an inference from the general to the specific (something known as Qal Wahomer), he sees in Psalm 69:25 a clear prophecy about Judas.1 Psalm 69 is also quoted in John 2:17, John 15:25, Romans 11:9–10, and Romans 15:3. The Psalm speaks of a threat against a godly person who typifies the Messiah and a prayer that such individuals (those opposed to God’s King) would be judged. In this sense it gives an idea of what Christ’s betrayer will be like.2 Once the Spirit had foretold the betrayal of Judas in the Old Testament already, it could not be otherwise but for that betrayal to be fulfilled.3
20 “For it is written in the Book of Psalms, “‘May his camp become desolate, and let there be no one to dwell in it’;and “‘Let another take his office.’