John Gill's  Exposition of the Bible 

Acts 11:25

Then departed Barnabas to Tarsus, for to seek Saul:

Then departed Barnabas to Tarsus,.... "In Cilicia" to seek Saul; who had been sent thither by the brethren that he might escape the rage of the Grecians, who sought to slay him, Acts 9:29.