“Therefore if I know not the meaning of the voice, I shall be unto him that speaketh a barbarian, and he that speaketh shall be a barbarian unto me.”
King James Version (KJV)
14:11 I shall be a barbarian to him - Shall seem to talk unintelligible gibberish.
1Co 14:11 If I know not the meaning of the voice. The language. I shall be unto him that speaketh a barbarian. A foreigner, not understanding his language. The Greeks and Romans called all not of their races barbarians.