John Gill Commentary Acts 11:25

"And he went forth to Tarsus to seek for Saul;" — Acts 11:25 (ASV)

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 9:29Acts 9:30) .