Jesus’ followers prayed and then chose Matthias to replace Judas.

Acts 1:23-26

23 So the apostles and other believers suggested the names of two men who qualified. One man was Joseph, who was called {whom people called} Barsabbas (OR, Joseph Barsabbas) who also had the Roman name Justus. The other man was Matthias. 24-25 24-25Then they prayed like this: “Lord Jesus, Judas stopped being an apostle. He died and went to the place where he deserved to be [EUP]. So we(exc) need to choose someone to replace Judas in order that he can serve you(sg) by becoming an apostle. You (sg) know what everyone is really like. So please show us which of these two men you have chosen.” 26 Then they cast lots to choose between the two of them, and the lot fell for Matthias. (OR, Then one of the apostles shook in a container small objects/stones that they had marked to determine which man God had chosen. And the small object/stone that they had marked for Matthias fell out of the container). So Matthias was considered {they considered Matthias} to be an apostle along with the other eleven apostles.