1 Thessalonians 1:5-7

because our gospel came to you not only in word, but also in power and in the Holy Spirit and with full conviction. You know what kind of men we proved to be among you for your sake. And you became imitators of us and of the Lord, for you received the word in much affliction, with the joy of the Holy Spirit, so that you became an example to all the believers in Macedonia and in Achaia.