The Acts 13:1-2

Now there were at Antioch, in the church that was there, prophets and teachers, Barnabas, and Symeon that was called Niger, and Lucius of Cyrene, and Manaen the foster-brother of Herod the tetrarch, and Saul. And as they ministered to the Lord, and fasted, the Holy Ghost said, Separate me Barnabas and Saul for the work whereunto I have called them.