2 Timothy 4:11 KJV

Only Luke is with me. Take Mark, and bring him with thee: for he is profitable to me for the ministry.
2 Timothy 4:11, King James Version

In context

10 For Demas hath forsaken me, having loved this present world, and is departed unto Thessalonica; Crescens to Galatia, Titus unto Dalmatia.

11 Only Luke is with me. Take Mark, and bring him with thee: for he is profitable to me for the ministry.

12 And Tychicus have I sent to Ephesus.