Acts 15:33-37

And after they had tarried there a space, they were let go in peace from the brethren unto the apostles.

Notwithstanding it pleased Silas to abide there still.

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

And some days after Paul said unto Barnabas, Let us go again and visit our brethren in every city where we have preached the word of the Lord, and see how they do.

And Barnabas determined to take with them John, whose surname was Mark.