Acts 15:23, 30, 35

and they wrote letters by them after this manner; The apostles and elders and brethren send greeting unto the brethren which are of the Gentiles in Antioch and Syria and Cilicia

So when they were dismissed, they came to Antioch: and when they had gathered the multitude together, they delivered the epistle

Paul also and Barnabas continued in Antioch, teaching and preaching the word of the Lord, with many others also.