'Barbarians' in the Bible

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].