Apostles of Christ casting of lots?

They borrowed this method from the Old Testament urim and thurim which the priests sometimes used to discern the will of God. The apostles were mistaken in adopting this method. For God had given them His Spirit so that they might be able to discern His leading. And of course we never again hear anything about Matthias, the man selected by casting lots. But we do hear quite a lot about a man named Paul, the man who was selected by God.