Verse 11. The meaning of the voice. Of the language that is uttered, or the sounds that are made.

I shall be unto him, etc. What I say will be unintelligible to him, and what he says will be unintelligible to me. We cannot understand one another any more than people can who speak different languages.

A barbarian. See Barnes "Ro 1:14".

The word means one who speaks a different or a foreign language.

{+} "voice" "language" {a} "barbarian" Ro 1:14