“And when they had appointed elders for them in every church, with prayer and fasting
they committed them to the Lord in whom they had believed.” – Acts 14:23 ESV

“How then will they call on him in whom they have not believed? And how are they to believe in him of whom they have never heard? And how are they to hear without someone preaching? And how are they to preach unless they are sent? As it is written, ‘How beautiful are the feet of those who preach the good news!’” –  Romans 10:14-15 (ESV)

“Paul and Timothy, servants of Christ Jesus, To all the saints in Christ Jesus who are at Philippi, with the overseers and deacons. ” – Philippians 1:1