Kehillah in Thessalonika I 1:7-9

Orthodox Jewish Bible

⁷ With the result that you became a mofet (portent), even a role model for all the ma’aminim (believers) in the territory of Macedonia [T.N. a Roman province in northern Greece] and in Achaia [T.N. a Roman province of southern Greece].

⁸ For from you the Dvar Hashem has resounded not only in Macedonia and in Achaia, but also in every place to which your emunah in Hashem has gone forth, with the result that we have no need to say anything.

⁹ For they themselves (the ma’aminim b’Moshiach in Macedonia and Achaia) are reporting about us, what sort of initial reception we had with you, and how you made teshuva, turning to Hashem from elilim (idols), from avodah zarah (idol worship), turning to worship the Elohim Chayyim and Elohei Emes (the Living G-d and the True G-d),