Acts 15:36-38

³⁶and after certain days, Paul said unto Barnabas, 'Having turned back again, we may look after our brethren, in every city in which we have preached the word of the Lord — how they are.'

³⁷And Barnabas counselled to take with them John called Mark,

³⁸and Paul was not thinking it good to take him with them who withdrew from them from Pamphylia, and did not go with them to the work;