1 Thessalonians 1:8

For from you hath sounded forth [as the sonorous, soul-stirring blast of a trumpet] the word of the Lord, not only in Macedonia and Achaia [after its subjection by the Romans, all Greece was divided into two parts, of which. Macedonia was the northern, and Achaia the southern], but in every place your faith to God-ward is gone forth; so that we need not to speak anything. [Thessalonica, being a seaport, had intercourse with all Greece, and with much of the then known world. News of the church in that place, and of the peculiar virtues that characterized it, soon spread through all Greece, and was borne by believers, and those interested in carrying such news, to the more remote parts of the earth. Though Paul had not been beyond the confines of Greece since his departure from Thessalonica, yet his experience in Greece leads him to speak by way of anticipation of parts as yet unvisited, and to represent the good news of the faith, etc., of the Thessalonians to have preceded him so that he had no need to say anything about it.]