Acts of the Apostles 1:23-26

So they nominated two: Joseph called Barsabbas, who was also known as Justus, and Matthias. They prayed, “Lord, you know everyone’s deepest thoughts and desires. Show us clearly which one you have chosen from among these two to take the place of this ministry and apostleship, from which Judas turned away to go to his own place.” When they cast lots, the lot fell on Matthias. He was added to the eleven apostles.