'Barbarians' in the Bible

Let the creditor seize all that he has,And let strangers plunder the product of his labor.

For You have turned the city into a pile of rocks,a fortified city, into ruins;the fortress of barbarians is no longer a city;it will never be rebuilt.

like heat in a dry land,You subdue the uproar of barbarians.As the shade of a cloud cools the heat of the day,so He silences the song of the violent.

You will no longer see the barbarians,a people whose speech is difficult to comprehend—who stammer in a language that is not understood.

But the barbarians shewed us no common kindness; for, having kindled a fire, they took us all in because of the rain that was falling and because of the cold.

And when the barbarians saw the venomous beast hang on his hand, they said among themselves, No doubt this man is a murderer, whom, though he hath escaped the sea, yet vengeance suffereth not to live.

I am debtor both to the Greeks, and to the Barbarians; both to the wise, and to the unwise.

a renewal in which there is no [distinction between] Greek and Jew, circumcised and uncircumcised, [nor between nations whether] barbarian or Scythian, [nor in status whether] slave or free, but Christ is all, and in all [so believers are equal in Christ, without distinction].