Barnabas and Paul are sent on their first missionary journey
While the church in Antioch was worshiping and fasting, the Holy Spirit told them to send out Barnabas and Paul.
Key passages
Ac 13:1–3

Now there were prophets and teachers in Antioch in the church that was there: Barnabas, and Simeon (who was called Niger), and Lucius the Cyrenian, and Manaen (a close friend of Herod the tetrarch), and Saul. And while they were serving the Lord and fasting, …

See also
Ac 14:26;